Flying
, : Other creatures you control get +1/+1 until end of turn.

Flying
Heroic — Whenever you cast a spell that targets War-Wing Siren, put a +1/+1 counter on War-Wing Siren.

Flying, haste
Whenever you attack with three or more creatures, you may pay . If you do, return Warcry Phoenix from your graveyard to the battlefield tapped and attacking.

Create a 4/4 white and blue Sphinx creature token with flying and vigilance.

Flying
Creature spells with flying you cast cost less to cast.

Warden of the Wall enters the battlefield tapped.
: Add .
As long as it's not your turn, Warden of the Wall is a 2/3 Gargoyle artifact creature with flying.

Flying
As long as Wardscale Dragon is attacking, defending player can't cast spells.

Flying
Whenever Warkite Marauder attacks, target creature defending player controls loses all abilities and has base power and toughness 0/1 until end of turn.

: Warmonger deals 1 damage to each creature without flying and each player. Any player may activate this ability.

Flying
All creatures attack each combat if able.
: Attacking creatures get +1/+0 until end of turn.

Whenever a player cycles a card, Warped Researcher gains flying and shroud until end of turn. (It can't be the target of spells or abilities.)

Flying
Whenever Warrior Angel deals damage, you gain that much life.

Flying, trample
Whenever Wasitora, Nekoru Queen deals combat damage to a player, that player sacrifices a creature. If the player can't, you create a 3/3 black, red, and green Cat Dragon creature token with flying.

Flying

Flying
Whenever you cast a Bolas planeswalker spell, you may sacrifice Wasp of the Bitter End. If you do, destroy target creature.

Flying
When Watcher in the Mist enters the battlefield, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Reach (This creature can block creatures with flying.)
Watcher in the Web can block an additional seven creatures each combat.

Flying
Morph—Reveal a white card in your hand. (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Watcher of the Roost is turned face up, you gain 2 life.

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.

Watchwing Scarecrow has vigilance as long as you control a white creature.
Watchwing Scarecrow has flying as long as you control a blue creature.