Whenever Augury Adept deals combat damage to a player, reveal the top card of your library and put that card into your hand. You gain life equal to its mana value.

Flying

Whenever a source you control deals damage to you, put that many +1/+1 counters on Auntie Blyte, Bad Influence.

, , Remove X +1/+1 counters from Auntie Blyte: It deals X damage to any target.

Auntie's Snitch can't block.

Prowl (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Goblin or Rogue.)

Whenever a Goblin or Rogue you control deals combat damage to a player, if Auntie's Snitch is in your graveyard, you may return Auntie's Snitch to your hand.

Put target enchantment on top of its owner's library.

Cycling (, Discard this card: Draw a card.)

Gain control of target Aura that's attached to a permanent. Attach it to another permanent it can enchant.

Flying

When Aura Thief dies, you gain control of all enchantments. (You don't get to move Auras.)

When Auratouched Mage enters, search your library for an Aura card that could enchant it. If Auratouched Mage is still on the battlefield, put that Aura card onto the battlefield attached to it. Otherwise, reveal the Aura card and put it into your hand. Then shuffle.

Flying, vigilance, haste

Whenever a player attacks with three or more creatures, you draw a card.

Whenever a player attacks with five or more creatures, Aurelia, the Law Above deals 3 damage to each of your opponents and you gain 3 life.

Flying, lifelink, ward

Disguise

When Aurelia's Vindicator is turned face up, exile up to X other target creatures from the battlefield and/or creature cards from graveyards.

When Aurelia's Vindicator leaves the battlefield, return the exiled cards to their owners' hands.

Metalcraft — Auriok Edgewright has double strike as long as you control three or more artifacts.

Equip costs you pay cost less.

As long as Auriok Steelshaper is equipped, each creature you control that's a Soldier or a Knight gets +1/+1.

Whenever Aurora Shifter deals combat damage to a player, you get that many .

At the beginning of combat on your turn, you may pay . When you do, Aurora Shifter becomes a copy of another target creature you control, except it has this ability and "Whenever this creature deals combat damage to a player, you get that many ."

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.

When Author of Shadows enters, exile all opponents' graveyards. Choose a nonland card exiled this way. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.

Creatures your opponents control enter tapped.

Whenever a creature an opponent controls enters, you gain 1 life.

Autograph Book enters with a page counter on it for each person who has signed it.

, , Remove a page counter from Autograph Book: Draw a card.

: Add . Spend this mana only to activate an ability or cast an artifact spell.

When Automatic Librarian enters, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Vigilance

, : Put a +1/+1 counter on target Assembly-Worker you control.

//PRT-Prototype_Mech//

Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

2/2

: Mill a card.

Delirium — At the beginning of your end step, if there are four or more card types among cards in your graveyard, transform Autumnal Gloom.

: Attach target Aura attached to a creature to another creature.

Flying

When this creature transforms into Avacyn, the Purifier, it deals 3 damage to each other creature and each opponent.

Equipped creature can't attack, block, or transform, and its activated abilities can't be activated.

Shackle (: Attach to target creature you don't control. Shackle only as a sorcery.)

Whenever Avalanche Tusker attacks, target creature defending player controls blocks it this combat if able.

: Exchange control of Avarice Totem and target nonland permanent.

If an opponent controls seven or more lands, this spell costs less to cast.

Flying

: Avatar of Fury gets +1/+0 until end of turn.

If you have 3 or less life, this spell costs less to cast.

Flying

Avatar of Hope can block any number of creatures.

If an opponent controls at least four more creatures than you, this spell costs less to cast.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Reach, trample

Avatar of the Resolute enters with a +1/+1 counter on it for each other creature you control with a +1/+1 counter on it.

If there are ten or more creature cards total in all graveyards, this spell costs less to cast.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

: Destroy target creature. It can't be regenerated.

Flying

When Aven Eternal enters, amass Zombies 1. (Put a +1/+1 counter on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)

Flying

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Flying

As long as there are five or more mana values among cards in your graveyard, Aven Heartstabber gets +2/+2 and has deathtouch.

When Aven Heartstabber dies, mill two cards, then draw a card.

Flash

Flying

When Aven Interrupter enters, exile target spell. It becomes plotted. (Its owner may cast it as a sorcery on a later turn without paying its mana cost.)

Spells your opponents cast from graveyards or from exile cost more to cast.

Flash

Flying

Flying

Flying

When Aven Tactician enters, bolster 1. (Choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it.)

Flying

, Discard a card: Aven Trooper gets +1/+2 until end of turn.

Double strike

Whenever Avenging Huntbonder attacks, put a double strike counter on another target attacking creature.

As you cascade, you may put a land card from among the exiled cards onto the battlefield tapped. (Do this after the last card is exiled but before deciding whether to cast a nonland card.)

When Aviation Pioneer enters, create a 1/1 colorless Thopter artifact creature token with flying.

Enchant Mountain

Enchanted Mountain is a 7/7 red Giant creature with haste. It's still a land.

As an additional cost to cast this spell, you may sacrifice any number of creatures. This spell costs less to cast for each creature sacrificed this way.

Each opponent sacrifices a creature of their choice. Create a 3/6 black and red Avatar creature token with haste and "Whenever this creature attacks, it deals 3 damage to each opponent."

Awaken the Maelstrom is all colors.

Target player draws two cards. You may put an artifact card from your hand onto the battlefield. Create a token that's a copy of a permanent you control. Distribute three +1/+1 counters among one, two, or three creatures you control. Destroy target permanent an opponent controls.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. If it's equipped, you may destroy all Equipment attached to that creature.

Put nine +1/+1 counters on target land you control. It becomes a legendary 0/0 Elemental creature with haste named Vitu-Ghazi. It's still a land.

The next time target creature would deal damage this turn, prevent that damage. You gain life equal to the damage prevented this way.

Whenever one or more +1/+1 counters are put on Axgard Artisan for the first time each turn, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

At the beginning of your upkeep, you may have two target players exchange life totals.