100 cards.

ETB choose one: a 1/1 flying Bird token, bounce another nonland permanent, or draw a card; offspring turns one cast into two picks.

Has offspring {1}{R} itself and pings each opponent for 1 whenever another creature you control enters, damage off every body and token.

Flyer that ETB exiles up to two artifacts or enchantments, or plainscycles for {2} early to fix your draw.

The alternate commander: hasty, and when he attacks with a friend he digs six for a creature to put in tapped and attacking, returning it to hand at end of combat.

ETB makes a 3/3 first strike Golem; with offspring one cast leaves two Splicers and two Golems.

Enters with counters equal to one plus your other creatures, grows on each ally ETB, and dies into that many 1/1 Citizen tokens.

ETB gains 2 life and draws a card when it leaves the battlefield, cheap colorless value worth copying.

Flyer that ETB gains 2 life and draws two cards, a prime offspring copy target.

Exert when it attacks to untap your other creatures and take an extra combat phase, doubling a wide swing.

Flying draw engine: no maximum hand size, plus a card whenever one of your creature tokens deals combat damage to a player.

Trample and haste, and doubles its power until end of turn each time another creature you control enters, turning a token flurry into lethal.

Flyer that ETB brings a 1/1 flying Spirit along and later exiles itself to exile a creature.

Flash blocker that draws a card for each point of damage dealt to it.

Firebreathing giant that deals 3 damage divided among targets on ETB and each attack, a big body that clears small blockers.

Flyer that ETB gains 1 life and draws a card, cheap value that offspring doubles.

Ravenous, so it enters with X +1/+1 counters, and each attack makes 1/1 Rabbit tokens equal to its power.

First striker with a {3}{W}{W} activation giving attackers +X/+X equal to the attacker count, a mana-sink finisher for the token army.

Costs {1} less per token you control, and whenever a token enters it taps down and freezes an opponent's nonland permanent.

Vigilant two-drop that ETB fetches a tapped basic Plains if an opponent has more lands, catch-up ramp.

Returns your nonflying creatures to the battlefield with a flying counter when they die, resilience for the whole board.

Flying artifact dork that taps for any color, fixing all three of your colors on a body.

Flash flyer that ETB gives a creature you control hexproof until end of turn, protecting Zinnia at instant speed.

Evolve grower that draws a card whenever an opponent casts a noncreature spell with mana value less than its power.

Gives entering base power 1 creatures haste and grows plus turns unblockable whenever an uncast creature enters, paid off by every offspring token.

Flash flyer that blinks one of your non-Angel creatures to rerun its enter trigger or dodge removal.

Alliance: the first two creatures entering each turn make Treasures, later ones let you pay {X} for X damage to any target.

Flying two-drop that sacrifices to give your creatures indestructible, wrath insurance for a wide board.

ETB steals a noncommander creature by giving it a shield counter; you keep it as long as the counter stays on.

ETB makes three 1/1 Goblins and sacrifices Goblins for 2 damage each, tokens plus reach in one card.

ETB exiles a nonland, nontoken permanent with mana value 4 or less, premium creature-based removal that offspring can copy.

ETB fetches a tapped basic to ramp and fix, and replaces itself with a card when it dies, value artifact creature.

ETB draws a card on a two-mana enchantment creature, two cards off one cast with offspring.

Vigilant giant that returns a permanent card with mana value 3 or less from your graveyard on ETB and each attack.

Makes your creatures with power or toughness 1 or less unblockable, so every 1/1 offspring copy hits home.

ETB makes a 1/1 flying Thopter and gives your artifact creatures haste, an extra token body for the swarm.

Plus makes three 1/1 Soldiers a turn, the minus wraths power 4 or greater, and the emblem gives your team +2/+2 and flying.

Bounces all attacking creatures to their owner's hand, a one-sided reset against an alpha strike.

Exiles a creature for one mana; its controller may fetch a tapped basic land.

Instant-speed draw X then discard a card, a flexible late-game refill.

One-mana answer to any creature, leaving its controller a 3/3 Frog Lizard.

Costs {1} less for each creature that attacked this turn and draws three, cheap right after a wide swing.

Convoke sweeper dealing 6 damage to each untapped creature; swing first and your tapped team dodges it.

Draws two cards, discarding one only if you did not attack this turn, easy advantage in an attacking deck.

Each opponent draws a card and you draw one per opponent who did, cheap multiplayer card advantage.

Dusk wraths power 3 or greater and spares your 1/1s; Dawn later returns your power 2 or less creature cards from the graveyard.

Makes X 1/1 Soldiers and wraths all other creatures at X of 5+, a token-payoff sweeper that rebuilds your board instantly.

Bounces a creature with mana value X and makes X 1/1 flying Faeries, tempo removal that adds to your board.

Reanimates every creature card in your graveyard as a 1/1 flying Spirit, rebuilding wide with exactly the bodies Zinnia wants.

Returns one of your creatures to hand, then destroys all creatures, a wrath that saves your best piece.

Two-mana rock that taps for any color in your commander's identity, premier fixing and acceleration.

Pays {1} to add {W}{U}, cheap fixing for the deck's white-blue costs.

Draws a card whenever your creatures deal combat damage to a player and can force opposing attacks, big card flow off unblockable tokens.

Pays {1} to add {R}{W}, cheap fixing for the deck's red-white costs.

Two-mana rock that taps for colors your opponents' lands can produce, usually whatever you need.

Each combat makes a nonlegendary hasty copy of the equipped creature, abusing strong ETB and attack triggers in this deck.

Pays {1} to add {U}{R}, cheap fixing for the deck's blue-red costs.

Two-mana rock for {C} that cashes in for a card when you no longer need the mana.

One-mana rock tapping for {C}{C}, the format's best accelerant.

Gives your creature tokens menace and copies a nontoken attacker as a tapped, attacking 1/1 each time you attack a player.

Class that shows you your top card, levels into playing off the top after a spell, then discounts spells cast from anywhere but your hand.

Anthems your Birds with +1/+1 and vigilance and each end step makes a 1/2 flying Storm Crow per spell you cast that turn.

Painland that taps for {C}, or {W} or {U} at the cost of 1 damage.

Painland that taps for {C}, or {R} or {W} at the cost of 1 damage.

Filter land that pays {U/R} to add any mix of {U} and {R}, fixing double-colored costs.

Enters untapped with a Plains and can pay {2}{W}{W} to make a 1/1 Human, token utility on a land.

Checkland that enters untapped if you control a Mountain or a Plains, taps for {R} or {W}.

Taps for any color in your commander's identity, free perfect fixing for a Jeskai deck.

Sacrifices to fetch a tapped basic, smoothing color fixing and thinning the deck.

Taps for any color an opponent's land could produce, near-perfect fixing in a multiplayer pod.

Pays {1} and taps for {U}{R}, two colors from one land.

Checkland that enters untapped if you control a Plains or an Island, taps for {W} or {U}.

Jeskai tri-land that always enters tapped, taps for {U}, {R}, or {W}.

Taps for any identity color and scry 1 when used on a creature sharing your commander's type, fixing plus selection.

Filter land that pays {R/W} to add any mix of {R} and {W}, fixing double-colored costs.

Fastland that enters untapped with two or fewer other lands, taps for {W} or {U}.

Painland that taps for {C}, or {U} or {R} at the cost of 1 damage.

Pays {1} and taps for {W}{U}, two colors from one land.

Checkland that enters untapped if you control an Island or a Mountain, taps for {U} or {R}.

Pays {1} and taps for {R}{W}, two colors from one land.

Scryland that enters tapped with scry 1, taps for {W} or {U}.

Scryland that enters tapped with scry 1, taps for {U} or {R}.

Scryland that enters tapped with scry 1, taps for {R} or {W}.

Sacrifices to fetch a tapped basic, a second copy of Evolving Wilds for fixing and thinning.

Enters tapped naming a second color, then taps for {R} or the chosen color.

Enters tapped naming a second color, then taps for {W} or the chosen color.

Enters tapped naming a second color, then taps for {U} or the chosen color.

Basic land that taps for {W}.

Basic land that taps for {U}.

Basic land that taps for {R}.