Flying

At the beginning of each opponent's end step, that player chooses up to two creatures they control, then sacrifices the rest.

Flying

Whenever you cycle or discard another card, put a -1/-1 counter on each creature your opponents control.

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

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

When Archfiend's Vessel enters the battlefield, if it entered from your graveyard or you cast it from your graveyard, exile it. If you do, create a 5/5 black Demon creature token with flying.

Whenever a land enters the battlefield under your control, you get (an energy counter).

Pay : Create a 6/6 colorless Beast artifact creature token.

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 your library.

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 a planeswalker you control unless their controller pays for each of those creatures.

Flying

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

Nonbasic lands your opponents control enter the battlefield tapped.

Flying

When Archon of Justice dies, exile target permanent.

Flying, lifelink

Pegasus creatures you control have lifelink.

Constellation — Whenever an enchantment enters the battlefield under your control, create a 2/2 white Pegasus creature token with flying.

Flying, vigilance, trample

As Archon of Valor's Reach enters the battlefield, choose artifact, enchantment, instant, sorcery, or planeswalker.

Players can't cast spells of the chosen type.

Flying

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

Flying, haste

At the beginning of the end step, return Archwing Dragon to its owner's hand.

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

Arctic Flats enters the battlefield tapped.

: Add or .

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

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

(: Add or .)

Arctic Treeline enters the battlefield tapped.

: Target artifact creature's controller sacrifices it. That player may search their library for a noncreature artifact card, put it onto the battlefield, then shuffle their library.

, : Target creature gains vigilance until end of turn. Activate this ability 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 creature's converted mana cost. 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 this ability only before attackers are declared.

When Ardent Electromancer enters the battlefield, add for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

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 of your library in a random order.)

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

Vigilance

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

Flying

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

When Arena Rector dies, you may exile it. If you do, search your library for a planeswalker card, put it onto the battlefield, then shuffle your library.

, 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 this ability only if you control three or more artifacts.

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

Return target artifact or enchantment card from your graveyard to your hand.

: Untap two target lands.

Argothian Pixies can't be blocked by artifact creatures.

Prevent all damage that would be dealt to Argothian Pixies by artifact creatures.

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

, Pay 2 life: Draw a card.

At the beginning of your upkeep, if you have 5 or less life, you may transform Arguel's Blood Fast.

, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle your library.

Arixmethes, Slumbering Isle enters the battlefield tapped with five slumber counters on it.

As long as Arixmethes has a slumber counter on it, it's a land. (It's not a creature.)

Whenever you cast a spell, you may remove a slumber counter from Arixmethes.

: Add .

, , Sacrifice Ark of Blight: Destroy target land.

+1: Creatures you control get +1/+1 and gain trample until end of turn.

−1: Arlinn, Embraced by the Moon deals 3 damage to any target. Transform Arlinn, Embraced by the Moon.

−6: You get an emblem with "Creatures you control have haste and ‘: This creature deals damage equal to its power to any target.'"

Arlinn's Wolf can't be blocked by creatures with power 2 or less.

Trample

When Armada Wurm enters the battlefield, create a 5/5 green Wurm creature token with trample.

Destroy all lands.

When Armament Corps enters the battlefield, distribute two +1/+1 counters among one or two target creatures you control.

Enchant creature

Enchanted creature has double strike as long as it's an enchantment. Otherwise, prevent all damage that would be dealt by enchanted creature. (A creature with double strike deals both first-strike and regular combat damage.)

Vehicles you control become artifact creatures until end of turn. Choose a Dwarf you control. Attach any number of Equipment you control to it.

, , Sacrifice Armillary Sphere: Search your library for up to two basic land cards, reveal them, put them into your hand, then shuffle your library.

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.)

You may cast Armor of Thorns as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.

Enchant nonblack creature

Enchanted creature gets +2/+2.

, Sacrifice Armor Thrull: Put a +1/+2 counter on target creature.

Enchant creature

Enchanted creature gets +1/+1 for each Plains you control and has flying.

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