Pegasus Courser

Flying
Whenever Pegasus Courser attacks, another target attacking creature gains flying until end of turn.

Fog Bank

Defender, flying
Prevent all combat damage that would be dealt to and dealt by Fog Bank.

Riverwheel Aerialists

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

Niblis of Dusk

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

Preyseizer Dragon

Flying
Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with twice that many +1/+1 counters on it.)
Whenever Preyseizer Dragon attacks, it deals damage to any target equal to the number of +1/+1 counters on Preyseizer Dragon.

Blighted Bat

Flying
: Blighted Bat gains haste until end of turn.

Ringwarden Owl

Flying (This creature can’t be blocked except by creatures with flying or reach.)
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Windcaller Aven

Flying
Cycling (, Discard this card: Draw a card.)
When you cycle Windcaller Aven, target creature gains flying until end of turn.

Celestial Crusader

Flash (You may cast this spell any time you could cast an instant.)
Split second (As long as this spell is on the stack, players can’t cast spells or activate abilities that aren’t mana abilities.)
Flying
Other white creatures get +1/+1.

Sandstone Oracle

Flying
When Sandstone Oracle enters the battlefield, choose an opponent. If that player has more cards in hand than you, draw cards equal to the difference.

Puresteel Angel

Flying, indestructible
When Puresteel Angel enters the battlefield, exile all artifacts that aren’t colorless.
Whenever Puresteel Angel deals combat damage to a player, you get an emblem with “If you would lose the game, instead your life total becomes 20, shuffle your graveyard into your library, you lose all poison counters, and you lose this emblem.”

Crow of Dark Tidings

Flying
When Crow of Dark Tidings enters the battlefield or dies, mill two cards. (Put the top two cards of your library into your graveyard.)

Hypnotic Specter

Flying
Whenever Hypnotic Specter deals damage to an opponent, that player discards a card at random.

Seraph of the Suns

Flying
Indestructible (Damage and effects that say “destroy” don’t destroy this creature. If its toughness is 0 or less, it’s still put into its owner’s graveyard.)

Fetid Imp

Flying
: Fetid Imp gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Swarm of Locus

Flying
Whenever Swarm of Locus attacks, it gets +1/+0 until end of turn for each Locus you control.

Aven Battle Priest

Flying (This creature can’t be blocked except by creatures with flying or reach.)
When Aven Battle Priest enters the battlefield, you gain 3 life.

Stitched Drake

As an additional cost to cast this spell, exile a creature card from your graveyard.
Flying

Wall of One Thousand Cuts

Defender, flying
: Wall of One Thousand Cuts can attack this turn as though it didn’t have defender.