Lore Seeker

When Abandoned Bonfire enters the battlefield, you gain 2 life.
{T}: Add {C}.

Prowess
When Abbot of Keral Keep enters the battlefield, exile the top card of your library. Until end of turn, you may play that card.

Enchant creature
When Abduction enters the battlefield, untap enchanted creature.
You control enchanted creature.
When enchanted creature dies, return that card to the battlefield under its owner's control.

Flying
When Abhorrent Overlord enters the battlefield, create a number of 1/1 black Harpy creature tokens with flying equal to your devotion to black.
At the beginning of your upkeep, sacrifice a creature.

Haunt
When Absolver Thrull enters the battlefield or the creature it haunts dies, destroy target enchantment.

Enchant land
When Abundant Growth enters the battlefield, draw a card.
Enchanted land has "{T}: Add one mana of any color."

Flying
When Abyssal Horror enters the battlefield, target player discards two cards.

When Abzan Ascendancy enters the battlefield, put a +1/+1 counter on each creature you control.
Whenever a nontoken creature you control dies, create a 1/1 white Spirit creature token with flying.

This spell costs {1} less to cast if you control a Wizard.
When Academy Journeymage enters the battlefield, return target creature an opponent controls to its owner's hand.

When Academy Researchers enters the battlefield, you may put an Aura card from your hand onto the battlefield attached to Academy Researchers.

When Accursed Centaur enters the battlefield, sacrifice a creature.

Reach
When Acid Web Spider enters the battlefield, you may destroy target Equipment.

Deathtouch
When Acidic Slime enters the battlefield, destroy target artifact, enchantment, or land.

When Acolyte of Coils enters the battlefield, create a 3/3 green Snake creature token.
Serpents, Snakes, and Wurms you control have vigilance.

When Act of Authority enters the battlefield, you may exile target artifact or enchantment.
At the beginning of your upkeep, you may exile target artifact or enchantment. If you do, its controller gains control of Act of Authority.

When Adder-Staff Boggart enters the battlefield, clash with an opponent. If you win, put a +1/+1 counter on Adder-Staff Boggart.

Flying
When Aegis Angel enters the battlefield, another target permanent gains indestructible for as long as you control Aegis Angel.

Flying, haste
When Aerial Gunner enters the battlefield, arm it.

Flying
When Aethanis Sentinel enters the battlefield, each player may scry 1.

When Aethanis Watcher enters the battlefield, choose one —
• Exile target creature an opponent controls until Aethanis Watcher leaves the battlefield.
• Target opponent reveals their hand and you choose a nonland card from it. Exile that card until Aethanis Watcher leaves the battlefield.

When Aether Adept enters the battlefield, return target creature to its owner's hand.

When Aether Animist enters the battlefield, recharge twice.
Canisters you control are artifact creatures with base power and toughness 2/2.

First strike
When Aether Chaser enters the battlefield, you get {E}{E}.
Whenever Aether Chaser attacks, you may pay {E}{E}. If you do, create a 1/1 colorless Servo artifact creature token.

When Aether Herder enters the battlefield, you get {E}{E}.
Whenever Aether Herder attacks, you may pay {E}{E}. If you do, create a 1/1 colorless Servo artifact creature token.

When Aether Hub enters the battlefield, you get {E}.
{T}: Add {C}.
{T}, Pay {E}: Add one mana of any color.