Flying

When this creature enters the battlefield, you may put a name sticker on it. You gain X life, where X is the number of unique vowels on that sticker. (The vowels are A, E, I, O, U, and Y.)

Academy Elite enters the battlefield with X +1/+1 counters on it, where X is the number of instant and sorcery cards in all graveyards.

, Remove a +1/+1 counter from Academy Elite: Draw a card, then discard a card.

Counter target spell. Create X 1/1 colorless Thopter artifact creature tokens with flying, where X is that spell's mana value.

: Add one mana of any color.

: Add X mana of any one color, where X is the amount of life you gained this turn.

Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)

When Adipose Offspring enters the battlefield, create a 2/2 white Alien creature token. If Adipose Offspring's emerge cost was paid, instead create X of those tokens, where X is the sacrificed creature's toughness.

Return target creature to its owner's hand. Create X 1/1 green Saproling creature tokens, where X is that creature's mana value.

: Add one mana of any color.

, : Up to X target creatures you control each gain haste until end of turn and can't be blocked this turn except by creatures with haste, where X is the number of Bobbleheads you control as you activate this ability.

+2: Put two +1/+1 counters on up to one target creature.

+1: Reveal cards from the top of your library until you reveal a creature card. Put that card into your hand and the rest on the bottom of your library in a random order.

−11: Put X +1/+1 counters on target creature, where X is your life total. That creature gains trample until end of turn.

Whenever Akroan Hoplite attacks, it gets +X/+0 until end of turn, where X is the number of attacking creatures you control.

Whenever you cast a wordy spell, scry 2. (A spell is wordy if it has four or more lines of rules text.)

, : Choose target creature you don't control. Reveal the top card of your library. Alexander Clamilton gets +X/+0 until end of turn, where X is the number of lines of rules text of the revealed card. Alexander Clamilton fights that creature.

Whenever you cast a historic spell, create a 1/1 white Soldier creature token. (Artifacts, legendaries, and Sagas are historic.)

Whenever Alistair attacks, you may pay . If you do, creatures you control get +X/+X until end of turn, where X is the number of historic permanents you control.

Up to two target creatures each get +X/+X until end of turn, where X is the number of creatures in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

When Alpine Houndmaster enters the battlefield, you may search your library for a card named Alpine Watchdog and/or a card named Igneous Cur, reveal them, put them into your hand, then shuffle.

Whenever Alpine Houndmaster attacks, it gets +X/+0 until end of turn, where X is the number of other attacking creatures.

When Altar of the Wretched enters the battlefield, you may sacrifice a nontoken creature. If you do, draw X cards, then mill X cards, where X is that creature's power.

Craft with one or more creatures

: Return Altar of the Wretched from your graveyard to your hand.

Target creature gains trample and gets +X/+0 until end of turn, where X is 1 plus the number of cards named Ancestral Anger in your graveyard.

Draw a card.

Flying

Whenever Ancient Bronze Dragon deals combat damage to a player, roll a d20. When you do, put X +1/+1 counters on each of up to two target creatures, where X is the result.

You gain X plus 1 life, where X is the number of green creatures on the battlefield.

Menace (This creature can't be blocked except by two or more creatures.)

Whenever Animus of Night's Reach attacks, it gets +X/+0 until end of turn, where X is the number of creature cards in defending player's graveyard.

Until end of turn, target creature gains trample and gets +X/+X, where X is the number of creatures you control.

Eminence — At the beginning of combat on your turn, if Arahbo, Roar of the World is in the command zone or on the battlefield, another target Cat you control gets +3/+3 until end of turn.

Whenever another Cat you control attacks, you may pay . If you do, it gains trample and gets +X/+X until end of turn, where X is its power.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Whenever this creature mutates, tap up to X target creatures, where X is the number of times this creature has mutated. Those creatures don't untap during their controller's next untap step.

Whenever Armix, Filigree Thrasher attacks, you may discard a card. When you do, target creature defending player controls gets -X/-X until end of turn, where X is the number of artifacts you control plus the number of artifact cards in your graveyard.

Partner (You can have two commanders if both have partner.)

Destroy target artifact. It can't be regenerated. Create X 1/1 green Saproling creature tokens, where X is that artifact's mana value.

At the beginning of your upkeep, put a time counter on As Foretold.

Once each turn, you may pay rather than pay the mana cost for a spell you cast with mana value X or less, where X is the number of time counters on As Foretold.

If you would pay life while your library has at least that many cards in it, exile that many cards from the top of your library instead.

+1: Look at the top two cards of your library. Exile one of them and put the other into your hand.

−2: Create two 1/1 black Nightmare creature tokens with "At the beginning of combat on your turn, if a card was put into exile this turn, put a +1/+1 counter on this creature."

−7: Target player exiles the top X cards of their library, where X is the total mana value of cards you own in exile.

Enchant creature

Enchanted creature gets +X/+Y, where X is half the number of Forests you control, rounded down, and Y is half the number of Forests you control, rounded up.

Exile target creature. Put X +1/+1 counters on a commander creature you control, where X is the power of the creature exiled this way.

Destroy target enchantment. Create X 1/1 green Saproling creature tokens, where X is that enchantment's mana value.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Whenever this creature mutates, exile cards from the top of your library until you exile X permanent cards, where X is the number of times this creature has mutated. Put those permanent cards onto the battlefield.

Whenever a player casts a spell, that player gains X life, where X is the number of cards in all graveyards with the same name as that spell.

, Sacrifice another creature or artifact: Ayara, Widow of the Realm deals X damage to target opponent or battle and you gain X life, where X is the sacrificed permanent's mana value.

: Transform Ayara. Activate only as a sorcery. ( can be paid with either or 2 life.)

Whenever Bag End Porter attacks, it gets +X/+X until end of turn, where X is the number of legendary creatures you control.

: Add .

, : Add X mana of any one color, where X is the number of other Gates you control.

Whenever a Forest enters the battlefield, green creatures you control get +1/+1 and gain trample until end of turn.

Grandeur — Discard another card named Baru, Fist of Krosa: Create an X/X green Wurm creature token, where X is the number of lands you control.

When Basalt Ravager enters the battlefield, it deals X damage to any target, where X is the greatest number of creatures you control that have a creature type in common.

: Prevent the next X damage that would be dealt to target creature this turn, where X is the number of Clerics on the battlefield.

Flying

Prince of Chaos — When Be'lakor, the Dark Master enters the battlefield, you draw X cards and you lose X life, where X is the number of Demons you control.

Lord of Torment — Whenever another Demon enters the battlefield under your control, it deals damage equal to its power to any target.

Cast this spell only before the combat damage step.

Target creature gains trample and gets +X/+0 until end of turn, where X is its power. At the beginning of the next end step, destroy that creature if it attacked this turn.

Whenever Bioplasm attacks, exile the top card of your library. If it's a creature card, Bioplasm gets +X/+Y until end of turn, where X is the exiled creature card's power and Y is its toughness.

Destroy target creature and up to X other target creatures, where X is the number of Attractions you've visited this turn.

When Blazing Effigy dies, it deals X damage to target creature, where X is 3 plus the amount of damage dealt to Blazing Effigy this turn by other sources named Blazing Effigy.

Defender

, : Each opponent loses X life, where X is the number of creatures with defender you control.

When Blight-Breath Catoblepas enters the battlefield, target creature an opponent controls gets -X/-X until end of turn, where X is your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)

Target creature you control deals damage equal to its power to any target.

Fuse (You may cast one or both halves of this card from your hand.)

Choose one —

• Destroy all creatures.

• Destroy all planeswalkers.

Then return a creature or planeswalker card with mana value X or less from your graveyard to the battlefield, where X is the amount of spent to cast this spell. ( is mana from a snow source.)

Devour 1 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with that many +1/+1 counters on it.)

Each other creature you control enters the battlefield with an additional X +1/+1 counters on it, where X is the number of +1/+1 counters on Bloodspore Thrinax.

When Bloodtithe Harvester enters the battlefield, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

, Sacrifice Bloodtithe Harvester: Target creature gets -X/-X until end of turn, where X is twice the number of Blood tokens you control. Activate only as a sorcery.

Each noncreature, non-Equipment artifact is an Equipment with equip and "Equipped creature gets +X/+0," where X is that artifact's mana value.

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)

Equipped creature gets +X/+X, where X is the number of creature cards in all graveyards.

Equip

This spell costs less to cast if it targets a black permanent.

Bouncer's Beatdown deals X damage to target creature or planeswalker, where X is the greatest power among creatures you control. If that creature or planeswalker would die this turn, exile it instead.