Alliance — Whenever another creature enters the battlefield under your control, Attended Socialite gets +1/+1 until end of turn.

Whenever Attentive Sunscribe becomes tapped, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Audacious Infiltrator can't be blocked by artifact creatures.

Casualty 2 (As you cast this spell, you may sacrifice a creature with power 2 or greater. When you do, copy this spell and you may choose a new target for the copy.)

The owner of target nonenchantment permanent shuffles it into their library, then exiles the top card of their library. If it's a land card, they put it onto the battlefield. Otherwise, they may cast it without paying its mana cost.

Create a 0/1 green Plant creature token, then draw cards equal to the number of differently named creature tokens you control.

Trample

As long as you control eight or more lands, Augmenter Pugilist gets +5/+5.

: Regenerate Augur of Skulls.

Sacrifice Augur of Skulls: Target player discards two cards. Activate only during your upkeep.

As Auntie's Hovel enters the battlefield, you may reveal a Goblin card from your hand. If you don't, Auntie's Hovel enters the battlefield tapped.

: Add or .

Each enchantment deals 2 damage to its controller, then each Aura attached to a creature deals 2 damage to the creature it's attached to.

Attach target Aura you control to target creature.

Draw a card.

Whenever a creature enters the battlefield under your control, you may destroy target artifact or enchantment.

Flying

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

At the beginning of combat on your turn, choose up to one target creature you control. Until end of turn, that creature gets +2/+0, gains trample if it's red, and gains vigilance if it's white.

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.

: Return target artifact card with mana value 1 or less from your graveyard to your hand.

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.

When Auriok Survivors enters the battlefield, you may return target Equipment card from your graveyard to the battlefield. If you do, you may attach it to Auriok Survivors.

Trample

Whenever Aurochs attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.

When Auspicious Ancestor dies, you gain 3 life.

Whenever a player casts a white spell, you may pay . If you do, you gain 1 life.

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 the battlefield, 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.

Whenever one or more artifact creatures you control deal combat damage to a player, you get (an energy counter).

Pay : Create a tapped 3/3 colorless Robot artifact creature token.

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

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

, : Tap target non-Human creature.

Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Avacyn's Judgment deals 2 damage divided as you choose among any number of targets. If this spell's madness cost was paid, it deals X damage divided as you choose among those permanents and/or players instead.

: Add .

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

( can be paid with either or .)

Flying

When Avatar of Discord enters the battlefield, sacrifice it unless you discard two cards.

Reach, trample

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

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

When Aven Cloudchaser enters the battlefield, destroy target enchantment.

Flying

When Aven Fateshaper enters the battlefield, look at the top four cards of your library, then put them back in any order.

: Look at the top four cards of your library, then put them back in any order.

Flying

When Aven Gagglemaster enters the battlefield, you gain 2 life for each creature you control with flying.

Flash

Flying

If an opponent would search a library, that player searches the top four cards of that library instead.

Flying

Flying

Flying

: Look at target face-down creature.

Flying

Double strike (This creature deals both first-strike and regular combat damage.)

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.)

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.)

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.

Enchant artifact or creature

When Awakened Awareness enters the battlefield, put X +1/+1 counters on enchanted permanent.

As long as enchanted permanent is a creature, it has base power and toughness 1/1.

Monocolored creatures can't block this turn.

Enchant creature

Enchanted creature can't be blocked unless defending player pays for each creature they control that's blocking it.

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.")

Whenever Ayara, First of Locthwain or another black creature enters the battlefield under your control, each opponent loses 1 life and you gain 1 life.

, Sacrifice another black creature: Draw a card.

Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

: Counter target activated ability from an artifact source unless that ability's controller pays . (Mana abilities can't be targeted.)

: Add .

, : Add .

, : Add or .

Aysen Crusader's power and toughness are each equal to 2 plus the number of Soldiers and Warriors you control.

Whenever another Bear enters the battlefield under your control, choose one —

• Put two +1/+1 counters on target Bear.

• Target Bear you control fights target creature you don't control.