When Academy Researchers enters the battlefield, you may put an Aura card from your hand onto the battlefield attached to Academy Researchers.

Defender

Whenever you cast an instant or sorcery spell, you may draw a card. If you do, discard a card. This ability triggers only once each turn.

Target creature gets +X/+X until end of turn, where X is the highest mana value among permanents you control.

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

Whenever you crank Accessories to Murder, target creature gets +X/+0 until end of turn, where X is the number of creatures you control.

: Add one mana of any color.

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

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.

: Target attacking Zombie gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it. If its toughness is 0 or less, it's still put into its owner's graveyard.)

Spells your opponents cast that target Accursed Witch cost less to cast.

When Accursed Witch dies, return it to the battlefield transformed under your control attached to target opponent.

When Acererak the Archlich enters the battlefield, if you haven't completed Tomb of Annihilation, return Acererak the Archlich to its owner's hand and venture into the dungeon.

Whenever Acererak the Archlich attacks, for each opponent, you create a 2/2 black Zombie creature token unless that player sacrifices a creature.

Destroy all Forests.

, : Whenever target creature deals combat damage to a non-Wall creature this turn, destroy that non-Wall creature. When the targeted creature leaves the battlefield this turn, sacrifice Acidic Dagger. Activate only before blockers are declared.

All Slivers have ", Sacrifice this permanent: This permanent deals 2 damage to any target."

Flying, deathtouch

Megamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

When Acid-Spewer Dragon is turned face up, put a +1/+1 counter on each other Dragon creature you control.

Heavy Rock Cutter — Whenever Acolyte Hybrid attacks, destroy up to one target artifact. If an artifact is destroyed this way, its controller draws a card.

When Acolyte of Affliction enters the battlefield, mill two cards, then you may return a permanent card from your graveyard to your hand.

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)

Whenever Acolyte of the Inferno becomes blocked by a creature, it deals 2 damage to that creature.

Prevent the next X damage that would be dealt to target creature this turn, where X is your devotion to white. If damage is prevented this way, Acolyte's Reward deals that much damage to any target. (Each in the mana costs of permanents you control counts toward your devotion to white.)

Create two 1/1 green Squirrel creature tokens.

Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Search target opponent's library for an artifact card and put that card onto the battlefield under your control. Then that player shuffles.

Whenever Acquisition Octopus or equipped creature deals combat damage to a player, draw a card.

Reconfigure (: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Exile target creature you control, then return that card to the battlefield under its owner's control.

Draw a card.

When Act of Authority enters the battlefield, you may exile target artifact or enchantment.

At the beginning of your upkeep, you may exile target artifact or enchantment. If you do, its controller gains control of Act of Authority.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and this turn.)

Flash

You may have Activated Sleeper enter the battlefield as a copy of any creature card in a graveyard that was put there from the battlefield this turn, except it's a Phyrexian in addition to its other types.

Reveal the top card of your library and put that card into your hand. You lose life equal to its mana value. You may repeat this process any number of times.

Adamaro, First to Desire's power and toughness are each equal to the number of cards in the hand of the opponent with the most cards in hand.

(Transforms from Legion's Landing.)

: Add .

, : Create a 1/1 white Vampire creature token with lifelink.

Tap two untapped artifacts and/or creatures you control: Put a +1/+1 counter on Adaptive Gemguard. Activate only as a sorcery.

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

: Adarkar Sentinel gets +0/+1 until end of turn.

Flying, vigilance

: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.

Flying

: Target creature loses flying until end of turn. ( can be paid with one mana from a snow source.)

Choose a color. Target player reveals their hand and you choose a card of that color from it. That player discards that card.

Flying, haste

Whenever you cast an instant or sorcery spell, Wizards you control get +1/+1 until end of 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.

When Admiral Brass, Unsinkable enters the battlefield, mill four cards.

At the beginning of combat on your turn, you may return target Pirate creature card from your graveyard to the battlefield with a finality counter on it. It has base power and toughness 4/4. It gains haste until end of turn. (If a creature with a finality counter on it would die, exile it instead.)

Flying

Landfall — Whenever a land enters the battlefield under your control, you may exile target nonland permanent other than Admonition Angel.

When Admonition Angel leaves the battlefield, return all cards exiled with it to the battlefield under their owners' control.

Double strike

Eternalize (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Cat with no mana cost. Eternalize only as a sorcery.)

, : Copy target activated or triggered ability you control. You may choose new targets for the copy.

Ultimate Sacrifice — , Sacrifice Adric: Counter target activated or triggered ability.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Flying, lifelink, haste

First strike

: Target creature gains first strike until end of turn.

Flying

, Discard two cards: Return Advanced Stitchwing from your graveyard to the battlefield tapped.

Look at the top five cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. If you didn't put a card into your hand this way, draw a card.

Landfall — Whenever a land enters the battlefield under your control, equipped creature gets +2/+2 until end of turn.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Devoid (This card has no color.)

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step. Create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add ."

At the beginning of your end step, put a +1/+1 counter on target Beast creature you control.

Flying (This creature can't be blocked except by creatures with flying or reach.)

When Aegis Angel enters the battlefield, another target permanent gains indestructible for as long as you control Aegis Angel. (Effects that say "destroy" don't destroy it. A creature with indestructible can't be destroyed by damage.)