// Custom deck · Prismari, the Inspiration Prismari Storm Every instant and sorcery you cast copies itself for the whole chain.
e9bfe03eRules and list review, not a playtest record. Turn windows and matchup advice are estimates. The list reference covers card quantities and the command zone; card changes require another guide and pod-note review.
Rules basis: Magic Comprehensive Rules, August 19, 2026. Bracket basis: Wizards’ October 2025 update and February 2026 follow-up.
Prismari, the Inspiration gives every instant and sorcery you cast storm.
You spend the first five or six turns ramping and cantripping, then take one turn where you chain cheap spells and end on a payoff that gets copied for the whole chain. You are not attacking anyone. You are not blocking much. You are assembling one turn. The deck can also win without him, which matters because he costs 7 and eats removal: an overloaded Mizzix's Mastery and Niv-Mizzet, Parun function on their own, and the Niv line can finish when opponents are low enough for the cards you can still draw. Three Game Changers, four tutors, no extra turns, no mass land denial, author-estimated kill turn 6 to 8.
Seven cards from this build. Commanders start in the command zone. In multiplayer Commander, the first mulligan is free. For later mulligans, draw seven again; once you keep, put one card on the bottom for each mulligan beyond the free one.
T1 Island casts Preordain; T2 develop Signet if safe; T3 Tower supplies the second blue for Counterspell while ramping toward the commander. Crackle is a later payoff, not the early play.
Preordain can seek land three and Stone is castable on T2. If land three is missed, retain Abrade rather than assuming the seven-mana commander will arrive on schedule.
Ring does not supply Niv's UUU/RRR, Harmonic Prodigy's red or the red finishers. One Island and payoff names are not a functional colored-mana opener.
Pace and examples. Turn windows below are author estimates and illustrative sequences, not measured multiplayer results or guarantees. A first opponent eliminated is not a whole-table win. In multiplayer the first mulligan is free; later mulligans follow the London procedure. The commander starts in the command zone, outside the seven-card examples.
Read the commander once.
Seven mana is the price. Command Beacon and nine mana rocks in the 99 pay it. Resonating Lute does not: the mana it grants is for instant and sorcery spells only, so it powers the chain, never the commander.
Prismari gives every instant and sorcery you cast stormA triggered ability that functions on the stack: when you cast the spell, copy it for each other spell cast before it this turn (CR 702.40a). The copies are not cast, so they never add to the storm count themselves.. You spend the first five or six turns ramping and cantripping, then have one turn where you chain cheap spells and end on a payoff that gets copied for the whole chain.
You are not attacking anyone. You are not blocking much. You are assembling one turn.
Two cards bend that a little. Rootha, Mastering the Moment is {2}{U}{R} for a 3/4, and at the beginning of combat on a turn you cast an instant or sorcery you get an X/X flier with haste, where X is the greatest mana value among the instants and sorceries you cast that turn. Emberwilde Captain is {3}{R} for a 4/2 that makes you the monarch on arrival. Neither one is the plan. They are something to do with the turns you spend assembling.
The deck can win without Prismari, which matters because he costs 7 and eats removal. An overloaded Mizzix’s Mastery and Niv-Mizzet, Parun function on their own, and the Niv line can finish when opponents are low enough for the cards you can still draw. Crackle with Power without storm copies is reach, not a kill: one 40-life opponent needs X=8, which is 26 mana.
Four kill lines come out of that one turn: Crackle with Power, an overloaded Mizzix’s Mastery, Empty the Warrens into Terror of the Peaks, and Niv-Mizzet turning draws into damage. The first three want a storm countThe number of spells cast before this one this turn. Only real casts count, not copies.. The fourth wants six mana and a pile of draws: every card you draw with him out is a point of damage, two with Harmonic Prodigy beside him. Realistic kill is turn 6 to 8.
Bracket 3Commander brackets: 1 Exhibition, 2 Core, 3 Upgraded, 4 Optimized, 5 cEDH. Assess Game Changers, intent, pace and disruptive patterns together., top of it. Not Bracket 4. The audit is against the current rules, verified against the February 9 2026 update.
Two other things worth volunteering. Evolving Wilds and Terramorphic Expanse only fetch basics, and Maelstrom of the Spirit Dragon only fetches a Dragon, so none of the three count toward the tutor line. That last one does find Niv-Mizzet, Parun, the fourth kill line, so name it if anyone asks how he gets found.
You want three lands and two cheap actions. Cheap actions means a rock, a cantrip, or a tutor.
You do not pick one at sleeves-on. You pick at the point of attack, based on what is in the yard and what is on board.
Crackle with Power is {X}{X}{X}{R}{R}, five times X damage to each of up to X targets. Every storm copy uses the same X.
You do not need a huge X. You need a storm count. X=2 with five prior spells beats X=5 with none.
Narset’s Reversal doubles the whole thing. Copy your own Crackle on the stack, the copy keeps X (CR 707.10), and the original returns to your hand for a second cast and another storm count.
Mizzix’s Mastery overloaded for {5}{R}{R}{R} exiles every instant and sorcery in your graveyard, copies each one, and lets you cast the copies free.
This is the key interaction in the deck. Storm copies are not cast (CR 707.10), but Mizzix’s Mastery copies are cast. So under Prismari, every one of them gets its own storm trigger, and the count is climbing as you go. Six cards in the yard turns into an avalanche.
There is no fixed number on this line. It scales with what you already spent.
Two other cards share that cast-the-copies interaction without sharing the scaling. Emeritus of Ideation’s Ancestral Recall copy is cast, so it gets its own storm trigger, but prepare does not waive the mana cost. You still pay for it. Pay it anyway when the count is up: at storm 5 the {U} copy is six instances and 18 cards with no put-backs, more raw selection than the Brainstorm line, plus 18 pings from those draws and one more from his cast-trigger draw with Niv-Mizzet, Parun out, and Thought Vessel’s no maximum hand size is what lets you keep the pile. Improvisation Capstone is {5}{R}{R} and exiles cards off the top of your library until the exiled cards total mana value 4 or more, then lets you cast any number of them without paying their costs. Those are real casts with real storm triggers, but the size of the effect comes off the top of your library, not out of your graveyard, so it does not grow with what you already spent.
Empty the Warrens has storm printed on it, and Prismari grants a second instance. CR 702.40b: each instance triggers separately.
The same double storm applies to Brain Freeze. With The Water Crystal adding four to every mill, the mill line gets out of hand faster than the goblin line.
Know what the goblin half actually is. At storm count 5 it is 22 goblins and 22 damage from Terror of the Peaks, against the 120 a full table takes to kill. That is not a kill on the spot. It is a board plus a burn burst: point the Terror damage at whoever is closest to dead, keep the goblins as blockers on a deck that does not block, and finish the turn after.
The bigger version of this line skips the goblins. Terror of the Peaks triggers on any other creature you control entering, not just tokens you made with a storm spell, and the damage goes to any target. Molten Duplication is a sorcery, so it copies for the whole storm count, and pointed at a Terror already on the battlefield every copy makes another Terror. Terror of the Peaks is not legendary, so the copies stack instead of dying to the legend rule, and each token that enters triggers every Terror that got there first. The tokens are sacrificed at the beginning of the next end step, so the damage is the point, not the board you keep. Terror has 5 power, so the trigger for each new one is 5 damage times the number of Terrors already out, and the total climbs on a triangle rather than a line. Three Steps Ahead has the same button at instant speed: its {3} Spree mode copies an artifact or creature you control, and it is an instant, so it copies for the whole count on someone else’s end step. The Fire Crystal’s {4}{R}{R}, {T} ability makes one more Terror token when the sorcery is not in hand.
Mill is a real second axis now, not just Brain Freeze. Exhibition Tidecaller is {U} for a 0/2 that mills a target player three on every instant or sorcery you cast, or ten instead if five or more mana was spent to cast that spell. Deploy it before the chain and every instant or sorcery you cast on the storm turn is another three off the top, with the expensive casts paying ten. Psychic Spiral is {4}{U}: shuffle your graveyard into your library, then target player mills that many. Late in a storm turn your graveyard is the pile of spells you just cast, so the Spiral is as large as the turn was. Read the two traps on these below before you plan a turn around them.
Niv-Mizzet, Parun turns cards into damage: every card you draw is 1 damage to any target, and every instant or sorcery any player casts draws you one. Nothing in the 99 turns that damage back into a draw, so there is no loop here: the damage only ever comes from cards you draw. Count the damage those draws make against the sum of life totals you intend to remove, and count your library too, because a draw from an empty library loses you the game (CR 704.5b). Harmonic Prodigy doubles him, because Niv is a Wizard: both of his triggers fire twice, so every instant or sorcery cast draws two and every card drawn is 2 damage.
Six mana and Niv cannot be countered. This is your plan when the table has shut off your graveyard or you are behind on mana.
Brainstorm is the cheap way to feed him. Each instance draws three and puts two back on top, so the two you buried get drawn again by the next copy, and the copies chew through the same two cards over and over while the real new cards stay in your hand. At storm count 5 the six Brainstorm instances draw 18 cards. Niv’s cast trigger adds one draw and ping, for 19 damage pointed wherever you want it and net six cards in hand after spending Brainstorm. With Harmonic Prodigy out the same Brainstorm is 20 draws and 40 damage, net seven cards, because Niv’s cast trigger draws twice and every draw pings twice. It is the cheapest payoff that scales with the storm count and refuels the chain instead of ending it. Winternight Stories draws off the count too, but it discards what it does not keep rather than stacking it back for the next copy, which is why Brainstorm is the one cantrip you do not lead with.
Wheel of Fortune is the heavy version of the same trick. The version that kills waits for Consecrated Sphinx already on the battlefield. Without her it is a stall-breaker, which is what step 06 below casts it as. {2}{R}: each player discards their hand, then draws seven. Three opponents drawing seven each is 21 Sphinx triggers offering 42 cards, and with Niv out every one of those draws is a point of damage: your seven, the up-to 42, and the card Niv’s own cast trigger drew on the way in make it 50 damage off a three-mana sorcery, pointed wherever you want it one trigger at a time. With Harmonic Prodigy out as well it is 102: Niv’s cast trigger draws two, and each of up to 51 draws pings twice. Consecrated Sphinx is not a Wizard, so her triggers are not doubled. Without Sphinx it is a symmetric refill that helps three opponents exactly as much as you, so the kill version waits for her. And Sphinx’s trigger is a may that takes two cards or none, so count your library before you accept all 21; taking every draw while holding lethal is how the deck kills itself first. Under Prismari every copy wheels the table again, and copies are not cast, so the storm count multiplies the wheels without adding a second cast trigger.
One more line hides in the 99 and costs one red mana. Emeritus of Conflict becomes prepared whenever you cast your third spell each turn, which every storm turn does on its own. The prepared Lightning Bolt copy is a real cast instant, so Prismari grants it storm: at storm 5 that is six Bolts, 18 damage split anywhere, for {R} mid-chain.
Rocks, fetches, cantrips. Play Sensei’s Divining Top and use it every turn you have a spare mana.
Do not cast Prismari on turn 6 into three untapped opponents just because you can. Do not tap out on anyone else's turn.This is when the Crystals matter. The Fire Crystal and The Water Crystal each shave a mana off half your deck, and that discount is what turns a five-spell turn into an eight-spell turn. Resonating Lute is even bigger: every land taps for two toward instants and sorceries. Irencrag Pyromancer earns its slot here too. It triggers on your second draw each turn, every turn, so with Consecrated Sphinx feeding you two cards off each opponent draw it fires all four turns of a cycle, roughly 12 damage before the storm turn ever comes. Harmonic Prodigy doubles that: the Pyromancer is a Wizard, so each of those triggers fires twice for 6. Faerie Mastermind hands you one card per opponent turn, on their second draw, so it needs a second draw from somewhere else before the Pyromancer sees anything.
Consecrated Sphinx here is often better than Prismari. It draws six a turn cycle at a full table and it does not telegraph a kill.Count before you commit. If you cannot see lethal, cast Prismari and pass with mana up, or do not cast him at all.
A resolved Prismari with no follow-up just paints a target on you.Do this in order every time. Storm turns are lost to sequencing far more often than to interaction.
Including Resonating Lute doubling your lands and both Crystals shaving costs. Count before the first spell, not halfway down the chain.
Every cantrip is a storm count for the payoff. Preordain, Sleight of Hand, Deduce, Lotus Petal. That order is not cosmetic: Lotus Petal costs {0} and taps for a mana, so casting it inside the chain buys a count and pays for the next spell at the same time. Brainstorm is the one cantrip you hold back. It gets bigger the later it goes, so it belongs after the count is built, not in front of it. See the kill line above.
Not during it. Exhibition Tidecaller is the clearest case: one blue mana up front and every instant or sorcery you cast after it mills three, or ten if five or more mana was spent to cast it. Spent, not printed cost: a five-drop the Crystals discounted to four spent mills three, not ten, and pays Molten-Core Maestro nothing. Cast it late and the chain that was supposed to feed it is already over. Harmonic Prodigy goes down before the chain for the same reason: while it is out, your other Wizards’ triggered abilities trigger twice, so the Tidecaller mills three twice off every real cast, or ten twice when five or more mana was spent. See the trap below.
Your spells cannot be countered while Hexing Squelcher is out, and your other creatures get ward, pay 2 life. It is the closest thing you have to blanket protection. Venser, Shaper Savant can bounce one spell off the stack for four mana, but the Squelcher turns them all off for as long as it lives. It is also a creature you can only cast in your own main phase, so it protects nothing sitting in your hand. Deploy it a turn early, or cast it before the first cantrip of the chain, and accept that it eats removal in between.
It is a sorcery-speed 2/2 with no flash. There is no holding it up.Pointed at Sol Ring or Talisman of Creativity. It copies for the whole storm count and every token taps immediately. At storm 5, pointed at Sol Ring, that is six Sol Ring tokens for two mana. If Terror of the Peaks is already on the battlefield, point it there instead and read the kill line above first, because that version ends the game rather than paying for it.
Never point it at The Fire Crystal or The Water Crystal.{2}{R}: each player discards their hand, then draws seven. Seven fresh cards and a storm count, and the hand you pitch lands in your graveyard where Mizzix’s Mastery wants it. It refills three opponents too, so mid-chain it is a stall-breaker rather than a value play. The version that ends games waits for Consecrated Sphinx; that line is written out under the Niv kill line above.
It is a sorcery, so it is main phase only. You cannot refuel with it at instant speed.Crackle with Power, Empty the Warrens, or Brain Freeze.
Rootha, Mastering the Moment checks at the beginning of combat whether you cast an instant or sorcery this turn, so the chain has to happen in your precombat main. X is the greatest mana value among the instants and sorceries you actually cast, and copies are not cast, so a storm count of ten does not raise X by one. The token flies and has haste, so it can attack the turn it arrives.
Chain in your postcombat main and Rootha gives you nothing that turn.The trap: storm copies do not trigger your “whenever you cast” cards. A copy of a spell is not cast (CR 707.10). So Gandalf, Goblins’ Bane, Exhibition Tidecaller, Molten-Core Maestro and Niv-Mizzet, Parun only see the original cast, not the ten copies. Do not count on eleven Gandalf pings. You get one, two with Harmonic Prodigy out, and Tidecaller mills off the real cast only.
Storm copies also do not add to the storm count for later spells. Only real casts do. The same rule sets Rootha’s X: only the spells you actually cast count toward the greatest mana value.
Niv’s other half is a different matter. His cast trigger sees one spell, but “whenever you draw a card” does not care where the draw came from, so every copy of Brainstorm that resolves still pings for three. The six Brainstorm instances therefore supply 18 pings, and Niv’s cast-trigger draw adds one more for 19 total. Gandalf still sees only the one cast.
Mizzix’s Mastery copies are cast. Storm copies are not, but Mastery copies are, so under Prismari every one of them gets its own storm trigger and the count is climbing as you go (storm copies: CR 707.10; cast copies: CR 707.12). This is the single highest-ceiling line in the deck and the reason the graveyard is a resource, not a dump.
Double storm is real. Empty the Warrens and Brain Freeze each carry printed storm plus Prismari’s. Both trigger (CR 702.40b). That is where the 11 instances at storm count 5 comes from, not from a doubling effect.
Gogo copies the storm trigger itself. Storm is a triggered ability (CR 702.40a), and Gogo, Master of Mimicry is {X}{X}, {T}: copy target activated or triggered ability you control X times, and you may choose new targets for the copies. Point him at the storm trigger while it is on the stack and the count you paid for is not the count you get. Storm 3 plus Gogo at X=1 gets you where an unaided storm 6 gets you: the trigger makes three copies, Gogo’s copy of the trigger makes three more, and the payoff resolves seven times off a three-spell chain. X cannot be 0, and the ability itself cannot be copied, so it is one shot per untap. He is {2}{U} and the ability taps him, so unlike Exhibition Tidecaller, which only has to beat the first cantrip, Gogo needs a full turn on the battlefield before the chain. The Fire Crystal is the exception: creatures you control have haste, so with it out Gogo copies the trigger the turn he lands. Return the Favor is the same play at instant speed: its {1} Spree mode copies a triggered ability, no tap, no waiting.
Psychic Spiral pays once, not once per copy. It shuffles your graveyard into your library, then mills a target player that many. Prismari copies it like anything else, but the first instance to resolve leaves your graveyard empty, so every instance after it shuffles nothing and mills nothing. Storm does not multiply this card. Count the yard once and cast it for that number.
Psychic Spiral and Mizzix’s Mastery want the same graveyard. The Spiral shuffles it into your library, the overloaded Mastery exiles it and casts the copies. Whichever resolves first takes the yard with it, so pick one line for the turn instead of planning on both.
Copies keep X and kicker. A copy uses the value of X and any additional or alternative costs (CR 707.10). So every Crackle with Power copy uses your X, and if you kicked Burst Lightning, every copy deals 4.
Mizzix’s Mastery and Improvisation Capstone free casts land at X=0. That rule is for storm copies of a spell on the stack. Mastery copies a card and lets you cast the copy, the Capstone casts the exiled cards themselves, and both waive the mana cost, so casting without paying a cost that includes X forces X to 0 (CR 107.3b). So Crackle with Power and Hell to Pay are dead off both: the spell resolves for nothing. Flashback is the one rebuy that keeps X, because a flashback cost is an alternative cost that includes X. It is not one red mana total, though: {R} casts Flashback, and then the yard Crackle costs its flashback cost, which equals its mana cost of {X}{X}{X}{R}{R}. You pay for X a second time, and you choose it (CR 601.2b). That is exactly the gap Mastery leaves.
Molten Duplication and legends. Never target The Fire Crystal or The Water Crystal. The token dies to the legend rule immediately.
Prismari grants storm to instants and sorceries only. Not creatures, not artifacts. Molten Duplication is a sorcery, so it copies. A creature spell does not.
Ward on Prismari is pay 5 life. Ward counters the opposing spell or ability unless its controller pays 5 life. Do not rely on it to stop removal when they can pay.
Command Beacon. Sacrifice it to move Prismari from the command zone to your hand, so the recast is seven from hand and skips the tax for that cast. It does not reset the tax: a later cast from the command zone still pays {2} for each earlier command-zone cast (CR 903.8). Save it for after the first removal spell, not before.
Saving Prismari mid-chain costs you the rest of the chain. His storm grant is a static ability, and a phased-out permanent is treated as though it does not exist, so its static abilities do nothing (CR 702.26b). Slip Out the Back sends him away until your next untap step (CR 702.26a). Bouncing him with Venser, Shaper Savant takes him off the battlefield outright. Either way the spells already on the stack keep the copies their storm triggers have made, and everything you cast afterward that turn loses his storm. Empty the Warrens and Brain Freeze still copy off their own printed storm; nothing else does. Dodge on the turn he lands, or once the payoff is already on the stack, not in the middle of the chain.
Venser is the answer to removal on your commander. Venser, Shaper Savant is {2}{U}{U} with flash, and when he enters you return target spell or permanent to its owner’s hand. Hold him up on the turn Prismari resolves. Somebody points removal at the commander, you flash Venser in and bounce Prismari yourself in response, and the removal spell is countered on resolution for having no legal target. Prismari is yours, so he goes to your hand, and you decline the command zone: tax does not go up and the recast is still seven, not nine. The spell itself is also a legal target, so Venser can send the removal back to its owner’s hand instead if you would rather keep the 7/7 on the battlefield. Bouncing your own commander carries the price in the trap above: he is off the battlefield, so nothing you cast after the bounce that turn has storm. Do it before the chain starts or after the payoff is on the stack. Off that turn he is a bounce for an opposing blocker or a resolved lock piece, and casting him still raises the storm count for the spells that follow, even though he is a creature and gets no storm of his own.
A 7/7 flier with storm is the most frightening thing on most tables, and it reads as a threat two turns before it is one. Three consequences.
Being honest about the gaps, because knowing them changes how you play.
Seven cards in this 100 are Japanese printings from Secrets of Strixhaven Mystical Archive. Fastest lookup at the table: read the number in the bottom-left corner of the card, printed as U 0087 or R 0080 above SOA・JP. Those are Latin digits and always in the same spot.
Two type words are worth memorizing: インスタント means Instant, ソーサリー means Sorcery.
Before you sleeve. These seven are your only copies of those cards. Crackle with Power is the English Secrets of Strixhaven printing, not a Japanese one, so it is not in this list. Separately, four deck cards have identical duplicate printings with nothing visual to tell them apart: Preordain, Sensei’s Divining Top, Big Score, Molten-Core Maestro. Count your final deck to 100 before you play.
All seven collector numbers are confirmed against the deck app: Daze 0080, Deduce 0081, Sleight of Hand 0087, Spell Pierce 0088, Abrade 0102, Burst Lightning 0106, Return the Favor 0112.
All 100 cards.
Azorius draw conversion. A 0/4 defender turns a creature's combat damage into cards: a fog on defense, a draw engine on offense.
Naya equipment-aggro, voltron off free attach on ETB. Three brackets: B2 swords-and-Skullclamp, B3 Jeska's Will, B4 Mana Vault.
Fallout precon dialed up, Bracket 3. Enchanted or equipped attackers make Junk tokens, feeding a voltron commander-damage kill.
Custom builds, cEDH lists and stock precons, filtered by colour, bracket or commander.