Flying Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Flying Whenever this creature attacks, you may goad target creature defending player controls. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Flying When this creature enters, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.) Delirium — This creature gets +1/+0 as long as there are four or more card types among cards in your graveyard.

Flying When this creature dies, draw a card.

At the beginning of combat on your turn, up to one target land you control becomes an X/X green and blue Bird creature with flying and haste until end of turn, where X is the number of cards in your hand. It's still a land. Whenever a land creature you control deals combat damage to a player, draw a card.

Flying Whenever a player casts their second spell each turn, this creature connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

Flying Council's dilemma — When this creature enters, starting with you, each player votes for feather or quill. Put a +1/+1 counter on this creature for each feather vote and draw a card for each quill vote. For each card drawn this way, discard a card.

Flying {3}{G}{U}: You gain 2 life and draw a card.

Flying Whenever this creature attacks, if you control three or more tokens, this creature gets +2/+0 and gains first strike until end of turn.

Flying Creature spells with flying you cast cost {1} less to cast.

Flying {T}: Add one mana of any color.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Whenever equipped creature attacks, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Flying {T}: Add one mana of any color.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

{T}: Add {C}{C}.

As this artifact enters, choose a creature type. Creature spells of the chosen type cost {2} less to cast.

Draw a card for each Bird on the battlefield.

Draw a card for each creature target player controls, then draw a card for each creature another target player controls.

Whenever a creature you control deals combat damage to an opponent, you may draw a card.

Enchant creature Whenever enchanted creature deals damage to an opponent, you may draw a card.

Whenever a nontoken creature you control enters, if it doesn't have the same name as another creature you control or a creature card in your graveyard, draw a card.

Flying Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, draw three cards.

As this enchantment enters, choose a creature type. Whenever a creature you control of the chosen type enters or attacks, draw a card.

Return any number of target nonland, nontoken permanents you control to their owners' hands. Draw a card for each card returned to your hand this way.

Whenever a creature you control deals combat damage to a player, you may draw a card. Cycling {2} ({2}, Discard this card: Draw a card.)

Counter target spell unless its controller pays {2}. If you control a Bird, counter that spell unless its controller pays {4} instead.

Flying Spells your opponents cast that target one or more commanders you control cost {3} more to cast. Partner (You can have two commanders if both have partner.)

Prevent all combat damage that would be dealt this turn.

Permanents you control gain hexproof and indestructible until end of turn.

Kicker {G} (You may pay an additional {G} as you cast this spell.) Scry 2, then draw a card. If this spell was kicked, you may put a land card from your hand onto the battlefield.

Blue creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step.

Flying Whenever another nontoken Bird you control enters, create a 1/1 blue Fish creature token.

Flying Whenever another creature dies, you may draw a card. If you do, discard a card.

Flash Flying When this creature enters, target creature you control gains hexproof until end of turn.

Draw a card. Scry 2.

Flying When this creature enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

This creature has deathtouch as long as you control three or more artifacts. Whenever an artifact you control enters, you gain 1 life. If this is the first time this ability has resolved this turn, put a +1/+1 counter on this creature.

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Destroy target artifact, enchantment, or creature with flying.

Return target nonland permanent you don't control to its owner's hand. Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Choose one — • Return all creature tokens to their owners' hands. • Return all nontoken creatures to their owners' hands.

Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.

Exile target artifact or creature. Its controller creates a 1/1 blue Bird creature token with flying. Foretell {U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Exile target artifact or creature. Its controller creates a 4/4 blue and red Elemental creature token.

{T}: Add {C}. {2}, {T}: Put a +1/+1 counter on target Bird, Cat, Dog, Goat, Ox, or Snake.

{T}: Add one mana of any color in your commander's color identity.

({T}: Add {G}.)

This land enters tapped. {T}: Add {G}. {4}{G}, {T}, Sacrifice this land: Discover 4. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

({T}: Add {U}.)

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {G}{U}.

Create two 1/1 blue Bird creature tokens with flying. Take an extra turn after this one. Exile Alrund's Epiphany. Foretell {4}{U}{U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Creatures you control with flying get +1/+1.

Creatures with flying get +2/+0. Creatures without flying get -2/-0.

As this creature enters, choose a creature type. This creature is the chosen type in addition to its other types. Each other creature you control of the chosen type enters with an additional +1/+1 counter on it.

Whenever you cast a nonlegendary creature spell with flying, you may copy it, except the copy is a 1/1 Spirit in addition to its other types. Do this only once each turn. (The copy becomes a token.)

Flying When this creature enters, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.") {1}{G}, {T}: Create a Food token. {T}, Sacrifice a Food: Add one mana of any color.

Each other creature you control enters with a number of additional +1/+1 counters on it equal to this creature's power and as a Mutant in addition to its other types.

Creatures you control have base power and toughness X/X until end of turn.

Target creature gets +1/+1 until end of turn for each creature you control.