Brilliant Plan

Plains

Vexing Gull

Ithilien Kingfisher

Flying
When this creature dies, draw a card.

Unexplained Vision

Draw three cards.
Adamant — If at least three blue mana was spent to cast this spell, scry 3.

Courier Hawk

Moon Heron

Winged Words

This spell costs {1} less to cast if you control a creature with flying.
Draw two cards.

Combat Professor

Flying
At the beginning of combat on your turn, target creature you control gets +1/+0 and gains vigilance until end of turn.

Aven Surveyor

Flying
When this creature enters, choose one —
• Put a +1/+1 counter on this creature.
• Return target creature to its owner's hand.

Apex Hawks

Multikicker {1}{W} (You may pay an additional {1}{W} any number of times as you cast this spell.)
Flying
This creature enters with a +1/+1 counter on it for each time it was kicked.

Inspired Charge

Creatures you control get +2/+1 until end of turn.

Lórien Revealed

Draw three cards.
Islandcycling {1} ({1}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)

Aerie Auxiliary

Flying
When this creature enters, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Aven Fisher

Flying (This creature can't be blocked except by creatures with flying or reach.)
When this creature dies, you may draw a card.

Wings of the Guard

Flying
Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)

Echo Inspector

Flying
When this creature enters, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

Island

Owl Familiar

Flying
When this creature enters, draw a card, then discard a card.

Cruel Witness

Flying
Whenever you cast a noncreature spell, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Dawnfeather Eagle

Flying
When this creature enters, creatures you control get +1/+1 and gain vigilance until end of turn.

Frost Trickster

Flying
When this creature enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Ghirapur Osprey

Serra Disciple

Flying, first strike
Whenever you cast a historic spell, this creature gets +1/+1 until end of turn. (Artifacts, legendaries, and Sagas are historic.)

Preordain

Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Augury Owl

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

Treasure Cruise

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Draw three cards.

Territorial Roc

Read the Tides

Choose one —
• Draw three cards.
• Return up to two target creatures to their owners' hands.

Quick Study

Speakeasy Server

Flying
When this creature enters, you gain 1 life for each other creature you control.

Counsel of the Soratami

Expedition Raptor

Talon Trooper

Soaring Show-Off

Flying
When this creature enters, each player draws a card.

Distant Melody

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

Scouting Hawk

Flying
Keen Sight — When this creature enters, if an opponent controls more lands than you, search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle.

Aven of Enduring Hope

Flying
When this creature enters, you gain 3 life.

Rain of Revelation

Welkin Tern

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

Airborne Aid

Draw a card for each Bird on the battlefield.

Heron of Hope

Flying
If you would gain life, you gain that much life plus 1 instead.
{1}{W}: This creature gains lifelink until end of turn.

Rush of Knowledge

Draw cards equal to the greatest mana value among permanents you control.

Sage Owl

Flying
When this creature enters, look at the top four cards of your library, then put them back in any order.

Warden of Evos Isle

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

Castle Raptors

Flying
As long as this creature is untapped, it gets +0/+2.

Palace Familiar

Augury Raven

Flying
Foretell {1}{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.)

Compulsive Research

Target player draws three cards. Then that player discards two cards unless they discard a land card.

Messenger Jays

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.

Skyswirl Harrier

Aven Sentry

Lifecreed Duo

Flying
Whenever another creature you control enters, you gain 1 life.

Eagles of the North

Flying
When this creature enters, creatures you control get +1/+0 and gain first strike until end of turn.
Plainscycling {1} ({1}, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)

Divination

Bay Falcon

Esper Cormorants

Mist Raven

Flying
When this creature enters, return target creature to its owner's hand.

Command Tower

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

Mind Spiral

Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before its other effects.)
Target player draws three cards. If the gift was promised, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Righteous Charge

Creatures you control get +2/+2 until end of turn.

Consider

Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Draw a card.

Gwaihir the Windlord

This spell costs {2} less to cast as long as you've drawn two or more cards this turn.
Flying, vigilance
Other Birds you control have vigilance.