Target creature becomes black and gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Draw a card.

, , Sacrifice Apocalypse Chime: Destroy all nontoken permanents with a name originally printed in the Homelands expansion. They can't be regenerated.

( can be paid with either or 2 life.)

Target artifact or creature you control gains protection from artifacts or from the color of your choice until end of turn.

Target opponent reveals their hand. You choose a card from it with mana value 4 or greater and exile that card.

: Apprentice Sorcerer deals 1 damage to any target. Activate only during your turn, before attackers are declared.

Discard a card: Switch Aquamoeba's power and toughness until end of turn.

Graft 2 (This creature enters with two +1/+1 counters on it. Whenever another creature enters, you may move a +1/+1 counter from this creature onto it.)

: Target creature with a +1/+1 counter on it gains reach until end of turn. (It can block creatures with flying.)

Put a flood counter on target land. That land is an Island in addition to its other types for as long as it has a flood counter on it. If you control a Merfolk, draw a card.

Flying

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

Reach

Tap an untapped Spider you control: Search your graveyard and/or library for a card named Arachnus Web and put it onto the battlefield attached to target creature. If you search your library this way, shuffle.

, : Arashi, the Sky Asunder deals X damage to target creature with flying.

Channel — , Discard Arashi: Arashi deals X damage to each creature with flying.

Vigilance

When Arbiter of Knollridge enters, each player's life total becomes the highest life total among all players.

Reach

: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

When Arbor Colossus becomes monstrous, destroy target creature with flying an opponent controls.

Creatures can't attack a player unless that player cast a spell or put a nontoken permanent onto the battlefield during their last turn.

Arc Lightning deals 3 damage divided as you choose among one, two, or three targets.

Haste (This creature can attack and as soon as it comes under your control.)

At the beginning of the end step, sacrifice Arc Runner.

Flying

At the beginning of your upkeep, sacrifice Arcades Sabboth unless you pay .

Each untapped creature you control gets +0/+2 as long as it's not attacking.

: Arcades Sabboth gets +0/+1 until end of turn.

Each player can't cast more than one spell each turn.

Arcane Sanctum enters tapped.

: Add , , or .

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)

Enchanted creature gets +2/+2 and has ": This creature deals 1 damage to any target."

Enchant creature

Enchanted creature has flying.

Aura swap (: Exchange this Aura with an Aura card in your hand.)

Trample

Whenever another artifact enters, put a +1/+1 counter on Arcbound Crusher.

Modular 1 (This creature enters with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Haste

Modular 2 (This creature enters with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

At the beginning of your upkeep, put a +1/+1 counter on each creature you control with modular.

Modular 6 (This creature enters with six +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Remove a +1/+1 counter from Arcbound Reclaimer: Put target artifact card from your graveyard on top of your library.

Modular 2 (This creature enters with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Flying

Modular 1 (This creature enters with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Modular 1 (This creature enters with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

When Archaeomancer enters, return target instant or sorcery card from your graveyard to your hand.

Flying

As Archangel of Strife enters, each player chooses war or peace.

Creatures controlled by players who chose war get +3/+0.

Creatures controlled by players who chose peace get +0/+3.

You gain 2 life for each card in your graveyard, then shuffle your graveyard into your library.

Flying, trample

At the beginning of your upkeep, sacrifice a non-Zombie creature, then create a 2/2 black Zombie creature token.

Creatures you control have trample.

Creatures your opponents control lose trample and can't have or gain trample.

Creatures you control have hexproof.

Creatures your opponents control lose hexproof and can't have or gain hexproof.

Creatures you control have flying.

Creatures your opponents control lose flying and can't have or gain flying.

If an opponent searched their library this turn, you may pay rather than pay this spell's mana cost.

Target opponent mills thirteen cards.

At the beginning of each end step, if you drew two or more cards this turn, you may put a quest counter on Archmage Ascension.

As long as Archmage Ascension has six or more quest counters on it, if you would draw a card, you may instead search your library for a card, put that card into your hand, then shuffle.

Flying

Whenever Archon of Redemption or another creature you control with flying enters, you may gain life equal to that creature's power.

Reach, trample

, Exile the top ten cards of your library: Arc-Slogger deals 2 damage to any target.

Arctic Flats enters tapped.

: Add or .

Kicker—Return a creature you control to its owner's hand. <I>(You may return a creature you control to its owner's hand in addition to any other costs as you cast this spell.)</I>

If Arctic Merfolk was kicked, it enters with a +1/+1 counter on it.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

When Arctic Wolves enters, draw a card.

, : Target creature gains vigilance until end of turn. Activate only during combat and only if defending player controls a snow land.

, : Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay , where X is that mana value. If they don't pay, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack this turn. Activate only before attackers are declared.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Kicker (You may pay an additional as you cast this spell.)

Vigilance

If Ardent Soldier was kicked, it enters with a +1/+1 counter on it.

Heroic — Whenever you cast a spell that targets Arena Athlete, target creature an opponent controls can't block this turn.

, Sacrifice an enchantment: Destroy target enchantment.

: Counter target enchantment spell.

Flying

Metalcraft — : Exile Argent Sphinx. Return it to the battlefield under your control at the beginning of the next end step. Activate only if you control three or more artifacts.

, : Return target artifact card from your graveyard to your hand.