Crimson Hellkite

Flying
, : Crimson Hellkite deals X damage to target creature. Spend only red mana on X.

Spirit of the Night

Flying, trample, haste, protection from black
Spirit of the Night has first strike as long as it’s attacking.

Frenetic Efreet

Flying
: Flip a coin. If you win the flip, Frenetic Efreet phases out. If you lose the flip, sacrifice Frenetic Efreet. (While it’s phased out, it’s treated as though it doesn’t exist. It phases in before you untap during your next untap step.)

Nalathni Dragon

Flying; banding (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 you control are blocking or being blocked by a creature, you divide that creature’s combat damage, not its controller, among any of the creatures it’s being blocked by or is blocking.)
: Nalathni Dragon gets +1/+0 until end of turn. If this ability has been activated four or more times this turn, sacrifice Nalathni Dragon at the beginning of the next end step.

Serra Angel

Flying
Vigilance (Attacking doesn’t cause this creature to tap.)

Wild Aesthir

Flying, first strike
: Wild Aesthir gets +2/+0 until end of turn. Activate only once each turn.

Swamp Mosquito

Flying
Whenever Swamp Mosquito attacks and isn’t blocked, defending player gets a poison counter. (A player with ten or more poison counters loses the game.)

Swamp Mosquito

Flying
Whenever Swamp Mosquito attacks and isn’t blocked, defending player gets a poison counter. (A player with ten or more poison counters loses the game.)

Carrier Pigeons

Flying
When Carrier Pigeons enters, draw a card at the beginning of the next turn’s upkeep.

Phantasmal Sphere

Flying
At the beginning of your upkeep, put a +1/+1 counter on Phantasmal Sphere, then sacrifice Phantasmal Sphere unless you pay for each +1/+1 counter on it.
When Phantasmal Sphere leaves the battlefield, target opponent creates an X/X blue Orb creature token with flying, where X is the number of +1/+1 counters on Phantasmal Sphere.

Carrier Pigeons

Flying
When Carrier Pigeons enters, draw a card at the beginning of the next turn’s upkeep.

Storm Elemental

Flying
, Exile the top card of your library: Tap target creature with flying.
, Exile the top card of your library: If the exiled card is a snow land, Storm Elemental gets +1/+1 until end of turn.

Ivory Gargoyle

Flying
When Ivory Gargoyle dies, return it to the battlefield under its owner’s control at the beginning of the next end step and you skip your next draw step.
: Exile Ivory Gargoyle.

Storm Crow

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

Wild Aesthir

Flying, first strike
: Wild Aesthir gets +2/+0 until end of turn. Activate only once each turn.

Storm Crow

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

Rogue Skycaptain

Flying
At the beginning of your upkeep, put a wage counter on Rogue Skycaptain. You may pay for each wage counter on it. If you don’t, remove all wage counters from Rogue Skycaptain and an opponent gains control of it.

Mesa Falcon

Flying
: Mesa Falcon gets +0/+1 until end of turn.

Sengir Bats

Flying
Whenever a creature dealt damage by Sengir Bats this turn dies, put a +1/+1 counter on Sengir Bats.