As Adaptive Automaton enters the battlefield, choose a creature type.

Adaptive Automaton is the chosen type in addition to its other types.

Other creatures you control of the chosen type get +1/+1.

Flying

Whenever Aetherstorm Roc or another creature enters the battlefield under your control, you get {E} (an energy counter).

Whenever Aetherstorm Roc attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it and tap up to one target creature defending player controls.

Draw a card for each Bird on the battlefield.

Nontoken creatures you control get +1/+1 and have vigilance.

Multikicker {1}{W} (You may pay an additional {1}{W} any number of times as you cast this spell.)

Flying

Apex Hawks enters the battlefield with a +1/+1 counter on it for each time it was kicked.

Creatures you control have flying.

Creatures your opponents control lose flying and can't have or gain flying.

Flying

Whenever Archon of Redemption or another creature with flying enters the battlefield under your control, you may gain life equal to that creature's power.

Flying

Arctic Aven gets +1/+1 as long as you control a Plains.

{W}: Arctic Aven gains lifelink until end of turn. (Damage dealt by this creature also causes you to gain that much life.)

Flying

When Augury Owl enters the battlefield, scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Artifact and enchantment spells your opponents cast cost {2} more to cast.

Sacrifice Aura of Silence: Destroy target artifact or enchantment.

Flying

Other Bird creatures get +1/+1.

Other Soldier creatures get +1/+1.

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

When Aven Cloudchaser enters the battlefield, destroy target enchantment.

Flying

Whenever a permanent is turned face up, put a +1/+1 counter on Aven Farseer.

Flying

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

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

Flying

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Flying

At the beginning of your upkeep, you may put a feather counter on target creature. If you do, that creature has base power and toughness 3/1 and has flying for as long as it has a feather counter on it.

Flash

Flying

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

Flying

Vanishing 3 (This creature enters the battlefield with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)

When Aven Riftwatcher enters or leaves the battlefield, you gain 2 life.

Flying

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

Megamorph {4}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Amplify 1 (As this creature enters the battlefield, put a +1/+1 counter on it for each Bird and/or Soldier card you reveal in your hand.)

Flying

Flying, vigilance

Creature tokens you control have flying and vigilance.

Embalm {4}{W}{U} ({4}{W}{U}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Bird Warrior with no mana cost. Embalm only as a sorcery.)

Azorius Chancery enters the battlefield tapped.

When Azorius Chancery enters the battlefield, return a land you control to its owner's hand.

{T}: Add {W}{U}.

Choose one --

• Creatures you control gain lifelink until end of turn.

• Draw a card.

• Put target attacking or blocking creature on top of its owner's library.

Azorius Guildgate enters the battlefield tapped.

{T}: Add {W} or {U}.

{T}: Add {W} or {U}.

{W}{U}: Azorius Keyrune becomes a 2/2 white and blue Bird artifact creature with flying until end of turn.

{T}: Add {W} or {U}.

{W/U}{W/U}{W/U}{W/U}, {T}, Sacrifice Azorius Locket: Draw two cards.

Create two 1/1 white Bird creature tokens with flying.

Flashback--Tap three untapped white creatures you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

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

{1}{U}, {T}: Creatures your opponents control attack this turn if able.

Boreal Shelf enters the battlefield tapped.

{T}: Add {W} or {U}.

As Caged Sun enters the battlefield, choose a color.

Creatures you control of the chosen color get +1/+1.

Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.

Counter target spell.

Flying

When Celestial Gatekeeper dies, exile it, then return up to two target Bird and/or Cleric permanent cards from your graveyard to the battlefield.

Flying

When Cloudchaser Eagle enters the battlefield, destroy target enchantment.

Flying

When Cloudchaser Kestrel enters the battlefield, destroy target enchantment.

{W}: Target permanent becomes white until end of turn.

Flying

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

Flying, protection from green

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

Coastal Tower enters the battlefield tapped.

{T}: Add {W} or {U}.

Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it. (For example, if two Goblin Warriors and a Goblin Shaman are on the battlefield, each gets +2/+2.)

Coldsteel Heart enters the battlefield tapped.

As Coldsteel Heart enters the battlefield, choose a color.

{T}: Add one mana of the chosen color.

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

Flying, protection from creatures

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

Sacrifice Commander's Sphere: Draw a card.

When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature.

{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Draw a card.

Counter target spell.

Flying

Whenever Coveted Peacock 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

Tap two untapped Birds you control: Draw a card.

Tap two untapped Wizards you control: Target creature gains flying until end of turn.

Tap two untapped creatures you control: You may put a creature card from your hand that shares a creature type with each creature tapped this way onto the battlefield.

Indestructible

{T}: Add one mana of any color.

Destroy all creatures.

Flying

{4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

Desert of the Mindful enters the battlefield tapped.

{T}: Add {U}.

Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)

Counter target spell. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Choose a creature type. Draw a card for each permanent you control of that type.

As Door of Destinies enters the battlefield, choose a creature type.

Whenever you cast a spell of the chosen type, put a charge counter on Door of Destinies.

Creatures you control of the chosen type get +1/+1 for each charge counter on Door of Destinies.

Flying, protection from Dragons

Flying

Landfall -- Whenever a land enters the battlefield under your control, you may create a 1/1 white Bird creature token with flying.

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

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

Counter target spell, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Counter target spell, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

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

Glacial Fortress enters the battlefield tapped unless you control a Plains or an Island.

{T}: Add {W} or {U}.

Flying

{5}{W}: The next time damage would be dealt to Glarecaster and/or you this turn, that damage is dealt to any target instead.

Creatures with flying get +2/+0.

Creatures without flying get -2/-0.

Flying

Whenever Gustcloak Harrier becomes blocked, you may untap it and remove it from combat.

Flying

Whenever a creature you control becomes blocked, you may untap that creature and remove it from combat.

Flying

Whenever Gustcloak Skirmisher becomes blocked, you may untap it and remove it from combat.

Halimar Depths enters the battlefield tapped.

When Halimar Depths enters the battlefield, look at the top three cards of your library, then put them back in any order.

{T}: Add {U}.

Flying, lifelink

Flying

High Sentinels of Arashin gets +1/+1 for each other creature you control with a +1/+1 counter on it.

{3}{W}: Put a +1/+1 counter on target creature.

Counter target spell that targets you or a permanent you control.

Draw a card.

This spell costs {3} less to cast if there are ten or more nonland permanents on the battlefield.

Destroy all nonland permanents.

Flying

{U}, Sacrifice Hydromorph Gull: Counter target spell that targets a creature you control.

Enchant creature, land, or planeswalker

Enchanted permanent is a colorless land with "{T}: Add {C}" and loses all other card types and abilities.

Prevent all damage that would be dealt to target creature this turn.

Whenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying

Whenever an opponent casts a spell, put a +1/+1 counter on Ishai, Ojutai Dragonspeaker.

Partner (You can have two commanders if both have partner.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Flying

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Flying

Sacrifice Judge's Familiar: Counter target instant or sorcery spell unless its controller pays {1}.

Cumulative upkeep {W} or {U} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

When Jötun Owl Keeper dies, create a 1/1 white Bird creature token with flying for each age counter on it.

Kicker {X}{2} (You may pay an additional {X}{2} as you cast this spell.)

Flying

When Kangee, Aerie Keeper enters the battlefield, if it was kicked, put X feather counters on it.

Other Bird creatures get +1/+1 for each feather counter on Kangee, Aerie Keeper.

{T}: Add {C}.

{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying

{T}, Tap two untapped Birds you control: Return target permanent to its owner's hand.

Destroy all creatures. They can't be regenerated.

Threshold -- If seven or more cards are in your graveyard, instead destroy all creatures, then create two 1/1 white Spirit creature tokens with flying. Creatures destroyed this way can't be regenerated.

Flying

{1}{W}, Sacrifice Lieutenant Kirtar: Exile target attacking creature.

Creatures without flying can't attack.

Flying

{3}{W}{W}, Sacrifice Major Teroh: Exile all black creatures.

As Metallic Mimic enters the battlefield, choose a creature type.

Metallic Mimic is the chosen type in addition to its other types.

Each other creature you control of the chosen type enters the battlefield with an additional +1/+1 counter on it.

Create four 1/1 white Bird creature tokens with flying.

Basic landcycling {2} ({2}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Flying

{2}: Target player mills a card. Mindshrieker gets +X/+X until end of turn, where X is the milled card's mana value.

Changeling (This card is every creature type.)

{X}: Until end of turn, creatures you control have base power and toughness X/X and gain all creature types.

Flying

When Mist Raven enters the battlefield, return target creature to its owner's hand.

Flying

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

Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.

Flying

Threshold -- As long as seven or more cards are in your graveyard, Mystic Familiar gets +1/+1 and has protection from black.

{T}: Add {C}.

{4}, {T}: Exile target attacking creature an opponent controls. At the beginning of the next end step, return it to the battlefield tapped under its owner's control.

Counter target noncreature spell.

Flash

Flying

Cycling {2}{U} ({2}{U}, Discard this card: Draw a card.)

When you cycle Nimble Obstructionist, counter target activated or triggered ability you don't control.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)

As Obelisk of Urd enters the battlefield, choose a creature type.

Creatures you control of the chosen type get +2/+2.

Choose two --

• Return target creature card with mana value 2 or less from your graveyard to the battlefield.

• You gain 4 life.

• Counter target creature spell.

• Draw a card.

Flying

When Palace Familiar dies, draw a card.

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

Flying

Pride of the Clouds gets +1/+1 for each other creature with flying on the battlefield.

Forecast -- {2}{W}{U}, Reveal Pride of the Clouds from your hand: Create a 1/1 white and blue Bird creature token with flying. (Activate only during your upkeep and only once each turn.)

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Flying

Echo {2}{U} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Raven Familiar enters the battlefield, look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

You have no maximum hand size.

{T}: Add {C}.

Counter target spell. Its controller can't cast spells this turn.

Exile target artifact or enchantment. If you cast this spell during your main phase, you may exile up to one other target artifact or enchantment.

Flying

When Reveillark leaves the battlefield, return up to two target creature cards with power 2 or less from your graveyard to the battlefield.

Evoke {5}{W} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Exile target artifact or enchantment.

Flying

Rimefeather Owl's power and toughness are each equal to the number of snow permanents on the battlefield.

{1}{S}: Put an ice counter on target permanent.

Permanents with ice counters on them are snow.

{T}: Add {C}.

{4}, {T}: Target creature can't be blocked this turn.

Flying

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

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

Flying

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

Flying

When Sawtooth Loon enters the battlefield, return a white or blue creature you control to its owner's hand.

When Sawtooth Loon enters the battlefield, draw two cards, then put two cards from your hand on the bottom of your library.

{T}: Add {C}.

{W}{U}, {T}, Sacrifice a Bird: Draw a card.

As Shared Triumph enters the battlefield, choose a creature type.

Creatures of the chosen type get +1/+1.

Flying

Islandcycling {2} ({2}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)

Equipped creature gets +1/-1.

Whenever equipped creature dies, draw two cards.

Equip {1}

Flying

Whenever Skymark Roc attacks, you may return target creature defending player controls with toughness 2 or less to its owner's hand.

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

Bird creatures get +1/+1.

{1}{W}: Target Bird creature gains banding until end of turn. (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 a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Flying

Whenever a creature with flying dies, put a +1/+1 counter on Soulcatcher.

Whenever a Bird is put into your graveyard from the battlefield, put a feather counter on Soulcatchers' Aerie.

Bird creatures get +1/+1 for each feather counter on Soulcatchers' Aerie.

Flying

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

Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Draw a card.

Flying

White spells and black spells you cast cost {1} less to cast.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

All lands are Islands in addition to their other types.

Creatures without flying or islandwalk can't attack.

Flying

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

Exile target creature. Its controller gains life equal to its power.

As Teferi's Moat enters the battlefield, choose a color.

Creatures of the chosen color without flying can't attack you.

Each opponent can cast spells only any time they could cast a sorcery.

+1: Until your next turn, you may cast sorcery spells as though they had flash.

-3: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card.

{T}: Add {C}{C}. Activate only if you control five or more lands.

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Flying

Whenever you cast a historic spell, return target creature card with mana value 3 or less from your graveyard to the battlefield. (Artifacts, legendaries, and Sagas are historic.)

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

Whenever Thieving Magpie deals damage to an opponent, draw a card.

Flying

Whenever Thrummingbird deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Tranquil Cove enters the battlefield tapped.

When Tranquil Cove enters the battlefield, you gain 1 life.

{T}: Add {W} or {U}.

As Urza's Incubator enters the battlefield, choose a creature type.

Creature spells of the chosen type cost {2} less to cast.

As Vanquisher's Banner enters the battlefield, choose a creature type.

Creatures you control of the chosen type get +1/+1.

Whenever you cast a creature spell of the chosen type, draw a card.

Flying

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

{3}{U}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying

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

Flying

Attacking creatures you control have lifelink.

Flying

Whenever a creature with flying attacks, you may draw a card.

Target player sacrifices an attacking creature.

Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Flying

Raid -- When Wingmate Roc enters the battlefield, if you attacked this turn, create a 3/4 white Bird creature token with flying.

Whenever Wingmate Roc attacks, you gain 1 life for each attacking creature.