100 CARDS.Bracket 4.

2/2 flying. Whenever a player sacrifices another permanent, put a +1/+1 counter on each creature you control. Every Priest activation, High Market crack, fetchland, and opposing sacrifice grows your whole board, quadrupled under the doublers.

4/5 deathtouch. Whenever you draw a card you gain 2 life, and whenever an opponent draws a card they lose 2 life. A resilient clock that punishes the table, pads your life total, and rewards all of your card draw.

6/5 fear, and it costs less with ten or more creature cards in all graveyards, so it is usually . : destroy target creature, it can't be regenerated. Repeatable removal every single turn.

1/1 Zombie that can't block. Sacrifice a creature: put a +1/+1 counter on this creature. A free repeatable outlet with no mana, no life, and no tap in the cost, so Mikaeus and Putrid Goblin loop off it without Yawgmoth: the Goblin ping-pongs between persist and undying returns, the Feeder grows every pass, the loop itself draws nothing, and Blood Artist, Cauldron of Essence, or The Meathook Massacre makes it lethal. Under Mikaeus it also sacrifices an empty Walking Ballista, so the counter each undying return brings is a spare ping every pass: true infinite damage with no counter augment. Birthing Pod finds it by sacrificing a Saproling, Pest, Spawn, or Fungus Beast token or Walking Ballista, all mana value 0, and pods it into Putrid Goblin. Once it holds a +1/+1 counter, Mikaeus's undying no longer brings it back.

Enters prepared with vigilance, letting you cast a copy of Regrowth to return any card from your graveyard to hand, and it re-prepares whenever it attacks while you control eight or more lands. You cannot cast Regrowth from hand: in every zone this is a creature card (CR 722.4), and the spell is a copy you cast out of exile once the body is on the battlefield (CR 722.3c). It enters prepared however it arrives, so Birthing Pod, Finale of Devastation, Zombify and Cauldron of Essence each deliver the Regrowth without the creature ever being cast. After the first one, every repeat is just an attack with eight or more lands.

Whenever you gain life, target opponent loses that much life, turning every Blood Artist trigger and lifegain into extra drain; in either combo loop it turns the payoff's own lifegain into an extra targeted loss, which doubles a Blood Artist pass, and an Arnyn pass in the Ballista loop, where the body that dies is the 1/1 his trigger reads, adds 1 to a Cauldron pass that already drains each opponent 1, and adds nothing to a Meathook-paid pass, because the Massacre gains you no life on your own deaths. When it dies it comes back as an enchantment rather than a creature, so the drain survives board wipes.

Surveils 1 each upkeep and becomes prepared once you have three or more creature cards in your graveyard, letting you cast copies of Reanimate to return any creature for life equal to its mana value. Reanimate is never castable from hand: the card is a creature in every zone (CR 722.4), and the copy is cast from exile (CR 722.3c). Unlike the two Emeritus bodies this one does not enter prepared: the check happens on its upkeep trigger, after the surveil, so it has to survive to your upkeep with three or more creature cards in the graveyard. Filling the yard mid-turn does nothing until then.

4/4. Devour 2 on entry, then a Saproling per +1/+1 counter each upkeep. Doubling Season doubles the devour counters and the tokens. A board in two turns.

1/3. At the beginning of combat on your turn, put X +1/+1 counters on each creature you control, where X is Ouroboroid's own power (one X for the whole batch). It counts itself, so every combat's batch grows the next one, and under Doubling Season plus The Earth Crystal each batch lands at four times size.

Whenever this or another nontoken creature you control dies, you may create a 0/1 Eldrazi Spawn token that sacrifices for . Each nontoken death becomes a token plus a burst of ramp, feeding your sac outlets and aristocrat payoffs at once, and in the Mikaeus plus Walking Ballista loop each Spawn sacrifice triggers Mazirek for a counter on Ballista, which is one spare ping per death and turns the loop into true infinite damage.

1/2. , sacrifice two other creatures: each target player loses 2 and sacrifices a creature, you add and draw. A free sacrifice outlet, edict, ramp, and draw in one card.

2/2 with persist. The combo cog: Mikaeus grants it undying, so each death ping-pongs it between a persist return with a -1/-1 counter and an undying return with a +1/+1 counter, and it never stays dead.

0/0 artifact creature, enters with X counters. Remove a counter to deal 1 to any target. Enters with 4x counters under Doubling Season plus The Earth Crystal, and under Mikaeus it has undying and never stays dead: repeatable removal, a reach finisher, and half of the Mikaeus death loop that the drain payoffs make lethal; a counter doubler or Pawn of Ulamog alongside Mazirek upgrades that loop to arbitrarily large damage, and so does Carrion Feeder sacrificing the empty Ballista, which turns the undying counter into a spare ping. The Great Henge does the same but draws a card on every pass, so that version stops at your library.

equip . Makes a nonlegendary haste copy of the equipped creature at each of your combats. Bolt it onto Mycoloth, Ouroboroid, Ancient Bronze Dragon, or Sheoldred for a runaway board; nine mana across cast and equip, and the first copy arrives the combat after it is equipped.

artifact. Whenever a creature you control dies, EACH opponent loses 1 and you gain 1, a table-wide Blood Artist. Also ,, sacrifice a creature: return a creature card from your graveyard to the battlefield, sorcery speed. The drain backbone and half the combo payoff.

, : add . Turn-one play every time.

Black spells cost less. Opposing nontoken creatures that would die are exiled and you gain 2 life instead, upgrading every trade and feeding every lifegain trigger: Trudge Garden, Enduring Tenacity, and a Professor Dellian Fel emblem. The trade-off is Tergrid: an exiled creature never reaches a graveyard, so a creature an opponent sacrifices under this Crystal is life for you instead of a body for her. The same replacement means those creatures never die, so Blood Artist and the Massacre's lifegain half do not fire on opposing deaths while it is out. ,: put an exiled creature onto the battlefield tapped under your control with two extra +1/+1 counters.

Green spells cost less AND doubles every +1/+1 counter put on your creatures, a second counter-doubler that stacks with Doubling Season for 4x on Walking Ballista. ,: distribute two counters.

, but it costs X less where X is the greatest power among your creatures, so a developed board casts it for a few mana. Taps for and 2 life, and every nontoken creature that enters under your control triggers it for a counter (doubled under the doublers) and a card. It is a trigger, not an enter-with effect, so a Walking Ballista at X=0 with no Mikaeus out is binned by state-based actions before the trigger goes on the stack: no counter on it, but you still draw.

Whenever a creature you control with a +1/+1 counter on it leaves the battlefield, create a Mutagen token for each counter, and exiles a card from a graveyard to make one more. Mutagens sacrifice to add +1/+1 counters, so deaths feed counters and counters feed more growth alongside light graveyard hate. It never fires off the Ballista loop, where the Ballista always leaves with its counters spent, but it fires on every other pass of the Yawgmoth loop: each undying return leaves the Goblin holding a +1/+1 counter, so its next death makes a Mutagen, or four under Doubling Season, which doubles the returning counter and then the tokens.

instant. Find a creature card to hand or graveyard: tutor a threat now, or bin a reanimation target for Zombify, Grave Researcher, or Cauldron of Essence.

Destroy a nonartifact creature. Premium two-mana kill.

Your permanents gain hexproof and indestructible until end of turn. Blanks a wrath or targeted removal at the key moment.

Change the target of target spell with a single target; you lose life equal to that spell's mana value. Not a counterspell, and not optional: if a legal new target exists you MUST move the spell there, and you pay the life either way, so a spell you cannot redirect still costs you. A sweeper or a two-target spell is out of reach entirely. Veil of Summer stops a counterspell of any color but only guards the board against blue and black; this moves one targeted spell of any color, and the drain shell pays the life straight back.

instant. Draw a card and lose 1 life, and as an additional cost you may sacrifice any number of creatures: it copies itself once per creature sacrificed, so N bodies become N+1 cards for N+1 life. An instant-speed sac outlet that refills your hand and triggers every death payoff, ideal in response to a board wipe.

Draw if an opponent cast blue or black, your spells cannot be countered, and you gain hexproof from blue and black. One mana that blanks a counter or removal spell.

instant. For any number of opponents, destroy target nonland permanent that player controls: up to three kills on one card at a full table, at instant speed, and it answers artifacts, enchantments, and planeswalkers as well as creatures. Affinity makes it cheap on a wide board. Lands and your own permanents are what it cannot touch, and it takes at most one thing per opponent, so it is never two kills off the table leader. Destroying is not sacrificing, so it hands Tergrid nothing.

Search your library or graveyard for a creature with mana value X or less and put it onto the battlefield. At X of 10 or more the team gets +X/+X and haste for the alpha strike, and the commander's affinity effectively pays down X.

Lesson sorcery. Puts two +1/+1 counters on each creature you control, then Paradigm recasts a free copy at the start of each of your first main phases for the rest of the game. A repeatable board-wide pump with no permanent to remove, doubled to eight per creature under The Earth Crystal plus Doubling Season, feeding Walking Ballista and the counter payoffs.

Fetch two basics, one to the battlefield tapped and one to hand. Ramp plus fixing.

sorcery that can't be countered. Draw cards equal to the greatest toughness among creatures you control, then put any number of creature cards from your hand onto the battlefield. A huge refuel and board dump that the commander's affinity for creatures makes cheap on a wide board.

Fetch any Forest, including Overgrown Tomb or Turbulent Fen. The land's own entry conditions still apply: pay 2 life for an untapped Tomb, and Fen needs opponents to control eight or more lands to enter untapped.

Destroy up to X target artifacts and/or enchantments, then create twice X 1/1 Pests that each gain you 1 life when they die. The only card in the deck that can destroy several artifacts and enchantments off one board, and the wide board that pays for it is the same board affinity discounts it with. Doubling Season makes it four Pests per X. A Pest enters as a 1/1, so while it is still one it is an Arnyn trigger and Skullclamp food; under Mikaeus it is a 2/2 that clamps to a 3/1 and lives, and Germination Practicum, Mazirek and Ouroboroid counters do the same. Buffed or not it is a body for the outlets, and casting it wide grows the affinity discount on everything after it.

sorcery. Pay X life as an additional cost, then all creatures get -X/-X until end of turn. It shrinks instead of destroying and it never targets, so indestructible, regeneration, and hexproof save nothing from it. The commander's affinity discounts the mana and never the life, so a wide board casts it for a single black mana while you still pick X by hand.

enchantment. Whenever an opponent plays a land, you may put a land from your hand onto the battlefield. Explosive early ramp that helps power out Cabal Coffers and turn the deck on ahead of schedule.

keystone. Doubles every token you make and every counter placed on your permanents: +1/+1 batches, loyalty (Professor Dellian Fel enters at 10 and can ultimate on arrival), and The One Ring's burden counters (two per tap, so its upkeep loss climbs 2, 4, 6). Land it before your token and counter cards so the first trigger already doubles.

enchantment. Whenever a creature you control dies, you gain 1 life and draw a card. Turns every sacrifice and token death into card advantage and life, exactly the engine this deck wants.

Draw an extra card each upkeep for 1 life. Steady advantage the lifegain shell pays for.

legendary enchantment, and not a Game Changer: it is not on the official list. On entry each creature gets -X/-X until end of turn, each of your creatures that dies bleeds every opponent 1, and each opposing death gains you 1 life. The mana-scaled sweeper and a death payoff for the Ballista loop and the Carrion Feeder version of the Goblin loop, so it is a wrath, a drain, and a combo payoff in one slot; it cannot fund the Yawgmoth loop, because it refunds no life on your own deaths.

Whenever you gain life, pay to make a 4/4 trample Fungus Beast. Turns the lifegain shell into a body factory.

Fast land, untapped with two or fewer other lands.

Enters tapped, taps for B, exiles a graveyard on entry. Free graveyard hate.

Land that taps for G, with a front-side fight spell (: a creature gets +2/+2 and fights). Removal or a land, your choice.

,: add per Swamp you control. Big mana once Urborg makes every land a Swamp.

Taps for B; ,: draw and lose life equal to your hand size. A grindy card-advantage land.

Modal land: pick the B side or the G side on entry.

Bounce land, taps for .

: add . , sacrifice a creature: gain 1 life. A free, untapped sac outlet on a land that dodges creature removal and triggers all of your death payoffs.

Enters tapped, gains 1 life, taps for B or G.

Painland: B or G for 1 damage, or for free.

Colorless utility land. : untap target attacking creature and prevent all combat damage it would deal or take this turn. Point it at the biggest opposing attacker to blank that swing for free. It taps to do it and untaps only on your turn, so it is one attacker per turn cycle, not one in each opponent's combat. It taps for no mana, so it is defense rather than fixing.

Town land that taps for B, with an adventure (: sacrifice an artifact or creature, draw two) you can play first and the land later.

Reveal a Swamp or Forest to enter untapped; taps for B or G.

Taps for ; ,: add mana equal to your devotion to a chosen color. Explosive off a heavy black or green board.

Golgari shock with Swamp and Forest types.

Enters untapped on turns one to three, taps for or pay 1 life for any color. Early fixing.

Taps for , or B or G if you control a Swamp.

Enters tapped unless opponents control eight or more lands, so it comes in untapped mid to late game; taps for B or G.

Filter land: into BB, BG, or GG.

Every land is a Swamp. Turns on Cabal Coffers and fixes black.

Fetchland for a Swamp or Forest (including Overgrown Tomb), 1 life.

Taps for ; ,: put a creature from your graveyard on top of your library. Recursion.

Check land, untapped with a Swamp or Forest in play.

Every land is a Forest. Fixes green, turns on Nykthos and green pips.