, , Sacrifice Apprentice Necromancer: Return target creature card from your graveyard to the battlefield. That creature gains haste. At the beginning of the next end step, sacrifice it.

When Aquatic Incursion enters, create two 1/1 blue Merfolk creature tokens with hexproof. (They can't be the targets of spells or abilities your opponents control.)

: Target Merfolk can't be blocked this turn.

Whenever Arabella, Abandoned Doll attacks, it deals X damage to each opponent and you gain X life, where X is the number of creatures you control with power 2 or less.

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.

, Exile cards from your graveyard equal to the number of opponents you have: Target creature card in your graveyard gains encore until end of turn. The encore cost is equal to its mana cost. (Exile the creature card and pay its mana cost: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

, : Arbalest Elite deals 3 damage to target attacking or blocking creature. Arbalest Elite doesn't untap during your next untap step.

Trample

When Arborback Stomper enters, you gain 5 life.

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.

Equipped creature has ": This creature deals 1 damage to target creature that's blocking it."

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

, : Draw a card.

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.)

, Remove X +1/+1 counters from Arcbound Javelineer: It deals X damage to target attacking or blocking 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.)

First strike

When Arcbound Shikari enters, put a +1/+1 counter on each other artifact creature you control.

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.)

Modular—Sunburst (This creature enters with a +1/+1 counter on it for each color of mana spent to cast it. When it dies, you may put its +1/+1 counters on target artifact creature.)

: Add .

, Sacrifice Archaeological Dig: Add one mana of any color.

Enchant creature

At the beginning of your upkeep, you may put an arrow counter on Archery Training.

Enchanted creature has ": This creature deals X damage to target attacking or blocking creature, where X is the number of arrow counters on Archery Training."

Creatures you control have first strike.

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

Creatures you control have deathtouch.

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

Flying

When Archfiend of Sorrows enters, creatures your opponents control get -2/-2 until end of turn.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Whenever Archghoul of Thraben or another Zombie you control dies, look at the top card of your library. If it's a Zombie card, you may reveal it and put it into your hand. If you don't put the card into your hand, you may put it into your graveyard.

Flying

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

When Archive Dragon enters, scry 2.

Flying

Protection from white (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything white.)

Creatures can't attack you or planeswalkers you control unless their controller pays for each of those creatures.

Flying

When Archway Angel enters, you gain 2 life for each Gate you control.

Flying

Arctic Aven gets +1/+1 as long as you control a Plains.

: Arctic Aven gains lifelink until end of turn. (Damage dealt by this creature also causes you to gain that much life.)

Trample

Cumulative upkeep or (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 Nishoba dies, you gain 2 life for each age counter on it.

, : 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.

At the beginning of combat on your turn, you may attach any number of Auras and Equipment you control to target permanent or player.

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

Vigilance

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

Target permanent becomes an artifact in addition to its other types until end of turn.

Draw a card.

: Prevent the next 2 damage that would be dealt to target artifact creature this turn.

Return target artifact card from your graveyard to the battlefield.

Prevent all damage that would be dealt to Argothian Treefolk by artifact sources.

Arisen Gorgon has deathtouch as long as you control a Liliana planeswalker. (Any amount of damage this deals to a creature is enough to destroy it.)

Each creature you control that's a Wolf or a Werewolf enters with an additional +1/+1 counter on it.

−2: Create a 2/2 green Wolf creature token.

Until end of turn, creatures you control gain "Whenever this creature deals damage to an opponent, you may return target creature that player controls to its owner's hand."

At the beginning of your upkeep, put a doom counter on Armageddon Clock.

At the beginning of your draw step, Armageddon Clock deals damage equal to the number of doom counters on it to each player.

: Remove a doom counter from Armageddon Clock. Any player may activate this ability but only during any upkeep step.

Target creature gets +1/+1 and gains double strike until end of turn.

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

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.)

When Armorcraft Judge enters, draw a card for each creature you control with a +1/+1 counter on it.

Armored Galleon can't attack unless defending player controls an Island.

Armored Scrapgorger gets +3/+0 as long as it has three or more oil counters on it.

: Add one mana of any color.

Whenever Armored Scrapgorger becomes tapped, exile target card from a graveyard and put an oil counter on Armored Scrapgorger.

, Sacrifice a Goblin: Arms Dealer deals 4 damage to target creature.

: You may put an artifact card from your hand onto the battlefield. That artifact gains haste. Sacrifice it at the beginning of the next end step.