Yanling's Harbinger

Creature — Bird (2/4)

Flying
When Yanling's Harbinger enters the battlefield, you may search your library and/or graveyard for a card named Mu Yanling, Celestial Wind, reveal it, and put it into your hand. If you search your library this way, shuffle.

Zephid

Creature — Illusion (3/4)

Flying
Shroud (This creature can't be the target of spells or abilities.)

Zndrsplt, Eye of Wisdom

Legendary Creature — Homunculus (1/4)

Partner with Okaun, Eye of Chaos (When this creature enters the battlefield, target player may put Okaun into their hand from their library, then shuffle.)
At the beginning of combat on your turn, flip a coin until you lose a flip.
Whenever a player wins a coin flip, draw a card.

Aboshan, Cephalid Emperor

Legendary Creature — Cephalid Noble (3/3)

Tap an untapped Cephalid you control: Tap target permanent.
: Tap all creatures without flying.

Adarkar Windform

Snow Creature — Illusion (3/3)

Flying
: Target creature loses flying until end of turn. ( can be paid with one mana from a snow source.)

Aerial Caravan

Creature — Human Soldier (4/3)

Flying
: Exile the top card of your library. Until end of turn, you may play that card. (Reveal the card as you exile it.)

Aethersquall Ancient

Creature — Leviathan (6/6)

Flying
At the beginning of your upkeep, you get (three energy counters).
Pay : Return all other creatures to their owners' hands. Activate only as a sorcery.

Air Elemental

Creature — Elemental (4/4)

Flying

Air Servant

Creature — Elemental (4/3)

Flying
: Tap target creature with flying.

Alexi, Zephyr Mage

Legendary Creature — Human Spellshaper (3/3)

, , Discard two cards: Return X target creatures to their owners' hands.

Alrund, God of the Cosmos // Hakka, Whispering Raven

Legendary Creature — God // Legendary Creature — Bird (1/1)

Alrund gets +1/+1 for each card in your hand and each foretold card you own in exile.
At the beginning of your end step, choose a card type, then reveal the top two cards of your library. Put all cards of the chosen type revealed this way into your hand and the rest on the bottom of your library in any order.

Hakka, Whispering Raven

Flying
Whenever Hakka, Whispering Raven deals combat damage to a player, return it to its owner's hand, then scry 2.

Amugaba

Creature — Illusion (6/6)

Flying
, Discard a card: Return Amugaba to its owner's hand.

Ancient Carp

Creature — Fish (2/5)

Arcanis the Omnipotent

Legendary Creature — Wizard (3/4)

: Draw three cards.
: Return Arcanis the Omnipotent to its owner's hand.

Archipelagore

Creature — Leviathan (7/7)

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, tap up to X target creatures, where X is the number of times this creature has mutated. Those creatures don't untap during their controller's next untap step.

Archmage of Echoes

Creature — Faerie Wizard (4/4)

Flying, ward
Whenever you cast a Faerie or Wizard permanent spell, copy it. (The copy becomes a token.)

Armored Cancrix

Creature — Crab (2/5)

Atemsis, All-Seeing

Legendary Creature — Sphinx (4/5)

Flying
, : Draw two cards, then discard a card.
Whenever Atemsis, All-Seeing deals damage to an opponent, you may reveal your hand. If cards with at least six different mana values are revealed this way, that player loses the game.

Azami, Lady of Scrolls

Legendary Creature — Human Wizard (0/2)

Tap an untapped Wizard you control: Draw a card.

Balshan Griffin

Creature — Griffin (3/2)

Flying
, Discard a card: Return Balshan Griffin to its owner's hand.