Inspired -- Whenever Aerie Worshippers becomes untapped, you may pay {2}{U}. If you do, create a 2/2 blue Bird enchantment creature token with flying.
2 /
4
{3}{W}
Ageless Sentinels
Creature - Wall
Defender (This creature can't attack.)
Flying
When Ageless Sentinels blocks, it becomes a Bird Giant, and it loses defender. (It's no longer a Wall. This effect lasts indefinitely.)
4 /
4
{3}{U}
Airborne Aid
Sorcery
Draw a card for each Bird on the battlefield.
--
Animal Sanctuary
Land
{T}: Add {C}.
{2}, {T}: Put a +1/+1 counter on target Bird, Cat, Dog, Goat, Ox, or Snake.
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{1}{W}{U}
Aven Mimeomancer
Creature - Bird Wizard
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.
3 /
1
{2}{W}
Aven Mindcensor
Creature - Bird Wizard
Flash
Flying
If an opponent would search a library, that player searches the top four cards of that library instead.
2 /
1
{2}{W}{U}
Aven Wind Guide
Creature - Bird Warrior
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.)
2 /
3
{3}
Azorius Keyrune
Artifact
{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.
{2}
Azorius Signet
Artifact
{1}, {T}: Add {W}{U}.
{2}{W}{W}
Battle Screech
Sorcery
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.)
{1}{W}
Cartographer's Hawk
Creature - Bird
Flying
When Cartographer's Hawk deals combat damage to a player who controls more lands than you, return it to its owner's hand. If you do, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.
2 /
1
{3}{W}{W}
Celestial Gatekeeper
Creature - Bird Cleric
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.
2 /
2
{2}{W}{U}
Cloud Cover
Enchantment
Whenever another permanent you control becomes the target of a spell or ability an opponent controls, you may return that permanent to its owner's hand.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{3}
Commander's Sphere
Artifact
{T}: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.
{3}{U}
Curiosity Crafter
Creature - Bird Wizard
Flying
You have no maximum hand size.
Whenever a creature token you control deals combat damage to a player, draw a card.
3 /
3
{2}{W}{W}
Emeria Angel
Creature - Angel
Flying
Landfall -- Whenever a land enters the battlefield under your control, you may create a 1/1 white Bird creature token with flying.
3 /
3
{1}{W}{U}
Empyrean Eagle
Creature - Bird Spirit
Flying
Other creatures you control with flying get +1/+1.
2 /
3
--
Evolving Wilds
Land
{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
--
Exotic Orchard
Land
{T}: Add one mana of any color that a land an opponent controls could produce.
{3}{W}
Eyes in the Skies
Instant
Create a 1/1 white Bird creature token with flying, then populate. (Create a token that's a copy of a creature token you control.)
{3}{W}
Falconer Adept
Creature - Human Soldier
Whenever Falconer Adept attacks, create a 1/1 white Bird creature token with flying that's tapped and attacking.
2 /
3
{1}{U}
Favorable Winds
Enchantment
Creatures you control with flying get +1/+1.
{3}{W}
Felidar Retreat
Enchantment
Landfall -- Whenever a land enters the battlefield under your control, choose one --
• Create a 2/2 white Cat Beast creature token.
• Put a +1/+1 counter on each creature you control. Those creatures gain vigilance until end of turn.
{2}
Fellwar Stone
Artifact
{T}: Add one mana of any color that a land an opponent controls could produce.
{1}{U}
Fog Bank
Creature - Wall
Defender, flying
Prevent all combat damage that would be dealt to and dealt by Fog Bank.
0 /
2
{2}{W}{W}
Force of Virtue
Enchantment
If it's not your turn, you may exile a white card from your hand rather than pay this spell's mana cost.
Flash
Creatures you control get +1/+1.
--
Glacial Floodplain
Snow Land - Plains Island
({T}: Add {W} or {U}.)
Glacial Floodplain enters the battlefield tapped.
{3}{U}{U}
Gravitational Shift
Enchantment
Creatures with flying get +2/+0.
Creatures without flying get -2/-0.
{4}{W}
Gustcloak Savior
Creature - Bird Soldier
Flying
Whenever a creature you control becomes blocked, you may untap that creature and remove it from combat.
3 /
4
{W}{W}{W}
Healer's Flock
Creature - Bird
Flying, lifelink
3 /
3
{3}
Icon of Ancestry
Artifact
As Icon of Ancestry enters the battlefield, choose a creature type.
Creatures you control of the chosen type get +1/+1.
{3}, {T}: Look at the top three cards of your library. You may reveal a creature card of the chosen type from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
{1}{W}
Intangible Virtue
Enchantment
Creature tokens you control get +1/+1 and have vigilance.
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{1}{W/U}{W/U}
Jubilant Skybonder
Creature - Human Wizard
Flying
Creatures you control with flying have "Spells your opponents cast that target this creature cost {2} more to cast."
2 /
2
{W/U}
Judge's Familiar
Creature - Bird
Flying
Sacrifice Judge's Familiar: Counter target instant or sorcery spell unless its controller pays {1}.
1 /
1
{2}{W}
Kangee's Lieutenant
Creature - Bird Soldier
Flying
Whenever Kangee's Lieutenant attacks, attacking creatures with flying get +1/+1 until end of turn.
Encore {5}{W} ({5}{W}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)
1 /
1
{2}{W}{U}
Kangee, Aerie Keeper
Legendary Creature - Bird Wizard
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.
2 /
2
{3}{W}{U}
Kangee, Sky Warden
Legendary Creature - Bird Wizard
Flying, vigilance
Whenever Kangee, Sky Warden attacks, attacking creatures with flying get +2/+0 until end of turn.
Whenever Kangee blocks, blocking creatures with flying get +0/+2 until end of turn.
3 /
3
{2}{U}
Keeper of the Nine Gales
Creature - Bird Wizard
Flying
{T}, Tap two untapped Birds you control: Return target permanent to its owner's hand.
1 /
2
{1}{U}
Lofty Denial
Instant
Counter target spell unless its controller pays {1}. If you control a creature with flying, counter that spell unless its controller pays {4} instead.
{2}{W}
Love Song of Night and Day
Enchantment - Saga
Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.)
I -- You and target opponent each draw two cards.
II -- Create a 1/1 white Bird creature token with flying.
III -- Put a +1/+1 counter on each of up to two target creatures.
{4}{U}
Messenger Jays
Creature - Bird
Flying
Council's dilemma -- When Messenger Jays enters the battlefield, starting with you, each player votes for feather or quill. Put a +1/+1 counter on Messenger Jays for each feather vote and draw a card for each quill vote. For each card drawn this way, discard a card.
2 /
1
{3}{W}{U}
Migratory Route
Sorcery
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.)
{2}{U}
Monastery Flock
Creature - Bird
Defender, flying
Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
0 /
5
{4}{U}{U}
Mu Yanling, Celestial Wind
Legendary Planeswalker - Yanling
+1: Until your next turn, up to one target creature gets -5/-0.
-3: Return up to two target creatures to their owners' hands.
-7: Creatures you control with flying get +5/+5 until end of turn.
L:
5
{1}{U}{U}
Mu Yanling, Sky Dancer
Legendary Planeswalker - Yanling
+2: Until your next turn, up to one target creature gets -2/-0 and loses flying.
-3: Create a 4/4 blue Elemental Bird creature token with flying.
-8: You get an emblem with "Islands you control have '{T}: Draw a card.'"
L:
2
{3}{U}{U}
Murder of Crows
Creature - Bird
Flying
Whenever another creature dies, you may draw a card. If you do, discard a card.
4 /
4
{3}{U}
Murmuring Mystic
Creature - Human Wizard
Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.
1 /
5
{3}{W}
Nesting Dovehawk
Creature - Bird
Flying
At the beginning of combat on your turn, populate. (Create a token that's a copy of a creature token you control.)
Whenever a creature token enters the battlefield under your control, put a +1/+1 counter on Nesting Dovehawk.
2 /
2
{3}{W}{W}
Ornitharch
Creature - Archon
Flying
Tribute 2 (As this creature enters the battlefield, an opponent of your choice may put two +1/+1 counters on it.)
When Ornitharch enters the battlefield, if tribute wasn't paid, create two 1/1 white Bird creature tokens with flying.
3 /
3
--
Path of Ancestry
Land
Path of Ancestry enters the battlefield tapped.
{T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
{W/U}{W/U}{W/U}
Plumeveil
Creature - Elemental
Flash
Defender, flying
4 /
4
--
Port Town
Land
As Port Town enters the battlefield, you may reveal a Plains or Island card from your hand. If you don't, Port Town enters the battlefield tapped.
{T}: Add {W} or {U}.
--
Prairie Stream
Land - Plains Island
({T}: Add {W} or {U}.)
Prairie Stream enters the battlefield tapped unless you control two or more basic lands.
{2}{W}
Prava of the Steel Legion
Legendary Creature - Cat Soldier
As long as it's your turn, creature tokens you control get +1/+4.
{3}{W}: Create a 1/1 white Soldier creature token.
Partner (You can have two commanders if both have partner.)
1 /
4
{W}{U}
Pride of the Clouds
Creature - Elemental Cat
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.)
1 /
1
{1}{W}
Rally of Wings
Instant
Untap all creatures you control. Creatures you control with flying get +2/+2 until end of turn.
{4}{U}{U}
Rise of Eagles
Sorcery
Create two 2/2 blue Bird enchantment creature tokens with flying. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
{2}{W}
Roc Egg
Creature - Bird Egg
Defender (This creature can't attack.)
When Roc Egg dies, create a 3/3 white Bird creature token with flying.
0 /
3
{3}
Sanctuary Raptor
Artifact Creature - Bird
Flying
Whenever Sanctuary Raptor attacks, if you control three or more tokens, Sanctuary Raptor gets +2/+0 and gains first strike until end of turn.
2 /
1
{3}{W}{W}
Scion of Vitu-Ghazi
Creature - Elemental
When Scion of Vitu-Ghazi enters the battlefield, if you cast it from your hand, create a 1/1 white Bird creature token with flying, then populate. (Create a token that's a copy of a creature token you control.)
4 /
4
{3}{W}{W}
Scour the Desert
Sorcery
Exile target creature card from your graveyard. Create X 1/1 white Bird creature tokens with flying, where X is the exiled card's toughness.
--
Seaside Haven
Land
{T}: Add {C}.
{W}{U}, {T}, Sacrifice a Bird: Draw a card.
--
Sejiri Refuge
Land
Sejiri Refuge enters the battlefield tapped.
When Sejiri Refuge enters the battlefield, you gain 1 life.
{T}: Add {W} or {U}.
{W}{U}
Skycat Sovereign
Creature - Elemental Cat
Flying
Skycat Sovereign gets +1/+1 for each other creature you control with flying.
{2}{W}{U}: Create a 1/1 white Cat Bird creature token with flying.
1 /
1
--
Skycloud Expanse
Land
{1}, {T}: Add {W}{U}.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{4}{W}{W}
Song of the Worldsoul
Enchantment
Whenever you cast a spell, populate. (Create a token that's a copy of a creature token you control.)
{1}{W}
Soulcatcher
Creature - Bird Soldier
Flying
Whenever a creature with flying dies, put a +1/+1 counter on Soulcatcher.
1 /
1
{1}{W}
Soulcatchers' Aerie
Enchantment
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.
{3}{W}{W}
Steel-Plume Marshal
Creature - Bird Soldier
Flying
Whenever Steel-Plume Marshal attacks, other attacking creatures you control with flying get +2/+2 until end of turn.
3 /
3
{1}{U}
Stormscape Familiar
Creature - Bird
Flying
White spells and black spells you cast cost {1} less to cast.
1 /
1
{2}
Talisman of Progress
Artifact
{T}: Add {C}.
{T}: Add {W} or {U}. Talisman of Progress deals 1 damage to you.
--
Temple of Enlightenment
Land
Temple of Enlightenment enters the battlefield tapped.
When Temple of Enlightenment enters the battlefield, scry 1.
{T}: Add {W} or {U}.
--
Terramorphic Expanse
Land
{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
{1}{W}{U}
The Raven's Warning
Enchantment - Saga
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I -- Create a 1/1 blue Bird creature token with flying. You gain 2 life.
II -- Whenever one or more creatures you control with flying deal combat damage to a player this turn, look at that player's hand and draw a card.
III -- You may put a card you own from outside the game on top of your library.
{2}{U}{U}
Thieving Magpie
Creature - Bird
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.
1 /
3
{1}{U}
Thrummingbird
Creature - Phyrexian Bird Horror
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.)
1 /
1
--
Tranquil Cove
Land
Tranquil Cove enters the battlefield tapped.
When Tranquil Cove enters the battlefield, you gain 1 life.
{T}: Add {W} or {U}.
{1}{U}{U}
Wall of Air
Creature - Wall
Defender, flying (This creature can't attack, and it can block creatures with flying.)
1 /
5
{2}{U}
Warden of Evos Isle
Creature - Bird Wizard
Flying
Creature spells with flying you cast cost {1} less to cast.
2 /
2
{W}{U}
Watcher of the Spheres
Creature - Bird Wizard
Flying
Creature spells with flying you cast cost {1} less to cast.
Whenever another creature with flying enters the battlefield under your control, Watcher of the Spheres gets +1/+1 until end of turn.
2 /
2
{5}{W}{W}
Windbrisk Raptor
Creature - Bird
Flying
Attacking creatures you control have lifelink.
5 /
7
{2}{U}
Winged Words
Sorcery
This spell costs {1} less to cast if you control a creature with flying.
Draw two cards.
{3}{W}
Wingmantle Chaplain
Creature - Human Cleric
Defender
When Wingmantle Chaplain enters the battlefield, create a 1/1 white Bird creature token with flying for each creature with defender you control.
Whenever another creature with defender enters the battlefield under your control, create a 1/1 white Bird creature token with flying.
0 /
3
{3}{W}{W}
Wingmate Roc
Creature - Bird
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.
3 /
4
{2}{U}
Wingspan Mentor
Creature - Human Wizard
When Wingspan Mentor enters the battlefield, put a flying counter on target non-Human creature you control.
{2}{U}, {T}: Put a +1/+1 counter on each creature you control with flying.