Lore Seeker

If you would draw a card, you may instead choose land or nonland and reveal cards from the top of your library until you reveal a card of the chosen kind. Put that card into your hand and put all other cards revealed this way on the bottom of your library in any order.

Flying, trample
You can't win the game and your opponents can't lose the game.

Choose one —
• Exile target creature with power 3 or greater.
• You draw two cards and you lose 2 life.
• Distribute two +1/+1 counters among one or two target creatures.

Outlast {W}
Each creature you control with a +1/+1 counter on it has flying.

Academy Elite enters the battlefield with X +1/+1 counters on it, where X is the number of instant and sorcery cards in all graveyards.
{2}{U}, Remove a +1/+1 counter from Academy Elite: Draw a card, then discard a card.

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

{1}, {T}: Acorn Catapult deals 1 damage to any target. That permanent's controller or that player creates a 1/1 green Squirrel creature token.

Gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn.

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.

Flying, vigilance
{T}: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.

Aeon Chronicler's power and toughness are each equal to the number of cards in your hand.
Suspend X—{X}{3}{U}. X can't be 0.
Whenever a time counter is removed from Aeon Chronicler while it's exiled, draw a card.

Flying
{1}{G}{U}: Creatures you control gain shroud until end of turn.

Return six target nonland permanents to their owners' hands.

Remove all counters from all permanents and exile all tokens.

Return all attacking creatures to their owner's hand.

Reveal the top four cards of your library. You may put a creature card from among them onto the battlefield. It gains "At the beginning of your end step, return this creature to its owner's hand." Then put the rest of the cards revealed this way on the bottom of your library in any order.

Gain control of target spell. You may choose new targets for it.

When Aethersnipe enters the battlefield, return target nonland permanent to its owner's hand.
Evoke {1}{U}{U}

Destroy target creature. It can't be regenerated. Its controller creates a 1/1 white Spirit creature token with flying.

Whenever an enchantment enters the battlefield under your control, create a 2/2 white Cat creature token. If that enchantment is an Aura, you may attach it to the token.

Whenever you gain life, put a +1/+1 counter on Ajani's Pridemate.

First strike, vigilance
Akiri, Line-Slinger gets +1/+0 for each artifact you control.
Partner

Akoum Refuge enters the battlefield tapped.
When Akoum Refuge enters the battlefield, you gain 1 life.
{T}: Add {B} or {R}.

Defender
When Akroan Horse enters the battlefield, an opponent gains control of it.
At the beginning of your upkeep, each opponent creates a 1/1 white Soldier creature token.

Destroy all artifacts, creatures, and enchantments.
Cycling {3}