Thieving Magpie

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever this creature deals damage to an opponent, draw a card.

Skycloud Expanse

Soulcatchers' Aerie

Whenever a Bird is put into your graveyard from the battlefield, put a feather counter on this enchantment.
Bird creatures get +1/+1 for each feather counter on this enchantment.

Stormscape Familiar

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

Crookclaw Elder

Flying
Tap two untapped Birds you control: Draw a card.
Tap two untapped Wizards you control: Target creature gains flying until end of turn.

Bay Falcon

Island

Plains

Island Sanctuary

If you would draw a card during your draw step, instead you may skip that draw. If you do, until your next turn, you can't be attacked except by creatures with flying and/or islandwalk.

Keeper of the Nine Gales

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

Aven Cloudchaser

Flying (This creature can't be blocked except by creatures with flying or reach.)
When this creature enters, destroy target enchantment.

Celestial Gatekeeper

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

Arctic Aven

Flying
This creature gets +1/+1 as long as you control a Plains.
{W}: This creature gains lifelink until end of turn. (Damage dealt by this creature also causes you to gain that much life.)

Gustcloak Savior

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

Sage Owl

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

Suntail Hawk

Warden of Evos Isle

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

Skyshroud Falcon

Duskrider Falcon

Serra Aviary

Storm Crow

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

Airborne Aid

Draw a card for each Bird on the battlefield.

Treetop Sentinel

Soulcatcher

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

Zephyr Falcon

Coast Watcher

Mystic Familiar

Flying
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1 and has protection from black.

Aven Smokeweaver

Veil of Birds

When an opponent casts a spell, if this permanent is an enchantment, it becomes a 1/1 Bird creature with flying.