Fell Specter

Flying
When Fell Specter enters the battlefield, target opponent discards a card.
Whenever an opponent discards a card, that player loses 2 life.

Bloodhunter Bat

Flying
When Bloodhunter Bat enters the battlefield, target player loses 2 life and you gain 2 life.

Angel of the Dire Hour

Flash
Flying
When Angel of the Dire Hour enters the battlefield, if you cast it from your hand, exile all attacking creatures.

Serra’s Guardian

Flying (This creature can’t be blocked except by creatures with flying or reach.)
Vigilance (Attacking doesn’t cause this creature to tap.)
Other creatures you control have vigilance.

Prescient Chimera

Flying
Whenever you cast an instant or sorcery spell, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Blessed Spirits

Flying
Whenever you cast an enchantment spell, put a +1/+1 counter on Blessed Spirits.

Serendib Efreet

Flying
At the beginning of your upkeep, Serendib Efreet deals 1 damage to you.

Lathliss, Dragon Queen

Flying
Whenever another nontoken Dragon enters the battlefield under your control, create a 5/5 red Dragon creature token with flying.
: Dragons you control get +1/+0 until end of turn.

Oona’s Blackguard

Flying
Each other Rogue creature you control enters the battlefield with an additional +1/+1 counter on it.
Whenever a creature you control with a +1/+1 counter on it deals combat damage to a player, that player discards a card.

Malakir Familiar

Flying, deathtouch
Whenever you gain life, Malakir Familiar gets +1/+1 until end of turn.

Archon of Redemption

Flying
Whenever Archon of Redemption or another creature with flying enters the battlefield under your control, you may gain life equal to that creature’s power.

Rishadan Airship

Flying
Rishadan Airship can block only creatures with flying.

Lightning Shrieker

Flying, trample, haste
At the beginning of the end step, Lightning Shrieker’s owner shuffles it into their library.

Windreader Sphinx

Flying
Whenever a creature with flying attacks, you may draw a card.

Lightning Phoenix

Flying, haste
Lightning Phoenix can’t block.
At the beginning of your end step, if an opponent was dealt 3 or more damage this turn, you may pay . If you do, return Lightning Phoenix from your graveyard to the battlefield.

Sprite Dragon

Flying, haste
Whenever you cast a noncreature spell, put a +1/+1 counter on Sprite Dragon.

Atarka, World Render

Flying, trample
Whenever a Dragon you control attacks, it gains double strike until end of turn.

Watcher of the Spheres

Flying
Creature spells with flying you cast cost 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.

Shacklegeist

Flying
Shacklegeist can block only creatures with flying.
Tap two untapped Spirits you control: Tap target creature you don’t control.

Stormwing Entity

This spell costs less to cast if you’ve cast an instant or sorcery spell this turn.
Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Stormwing Entity enters the battlefield, scry 2.

Shacklegeist

Flying
Shacklegeist can block only creatures with flying.
Tap two untapped Spirits you control: Tap target creature you don’t control.

Baneslayer Angel

Flying, first strike, lifelink, protection from Demons and from Dragons