Keyword: Flying

Flying
When Augury Owl enters the battlefield, scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Flying
When Liliana’s Specter enters the battlefield, each opponent discards a card.

Flying, deathtouch
When Baleful Strix enters the battlefield, draw a card.

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.

Flying
When Enigma Sphinx is put into your graveyard from the battlefield, put it into your library third from the top.
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

Flying
Other blue creatures you control get +1/+1.
Other black creatures you control get +1/+1.

Flying
When Dark Hatchling enters the battlefield, destroy target nonblack creature. It can’t be regenerated.

Flying
Whenever a nontoken creature enters the battlefield under an opponent’s control, create a token that’s a copy of that creature except it’s an artifact in addition to its other types. Then exile all other tokens created with Faerie Artisans.

Flying
Whenever you cast a spell, put a +1/+1 counter on Ramos, Dragon Engine for each of that spell’s colors.
Remove five +1/+1 counters from Ramos: Add . Activate this ability only once each turn.

Flying, vigilance, deathtouch, lifelink
At the beginning of your end step, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying, haste
At the beginning of combat on your turn, choose an opponent at random that Territorial Hellkite didn’t attack during your last combat. Territorial Hellkite attacks that player this combat if able. If you can’t choose an opponent this way, tap Territorial Hellkite.

Flying, trample
Whenever O-Kagachi, Vengeful Kami deals combat damage to a player, if that player attacked you during their last turn, exile target nonland permanent that player controls.

Flying
Whenever a Dragon you control becomes the target of a spell or ability an opponent controls, destroy target nonland permanent that player controls.

Flying
Whenever a Dragon you control dies while Boneyard Scourge is in your graveyard, you may pay . If you do, return Boneyard Scourge from your graveyard to the battlefield.

Flying
Commander creatures you control get +2/+2 and have haste.

Flying
, Exile Runehorn Hellkite from your graveyard: Each player discards their hand, then draws seven cards.

Flying
When Skyline Despot enters the battlefield, you become the monarch.
At the beginning of your upkeep, if you’re the monarch, create a 5/5 red Dragon creature token with flying.

Flying, trample
Whenever The Unspeakable deals combat damage to a player, you may return target Arcane card from your graveyard to your hand.

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
When Patron of the Vein enters the battlefield, destroy target creature an opponent controls.
Whenever a creature an opponent controls dies, exile it and put a +1/+1 counter on each Vampire you control.

Flying
Will of the council — When Custodi Squire enters the battlefield, starting with you, each player votes for an artifact, creature, or enchantment card in your graveyard. Return each card with the most votes or tied for most votes to your hand.

Flying
Whenever an opponent casts a spell, put a +1/+1 counter on Ishai, Ojutai Dragonspeaker.
Partner (You can have two commanders if both have partner.)

Eminence — As long as The Ur-Dragon is in the command zone or on the battlefield, other Dragon spells you cast cost less to cast.
Flying
Whenever one or more Dragons you control attack, draw that many cards, then you may put a permanent card from your hand onto the battlefield.

Flying
During each of your turns, you may cast an instant or sorcery spell from your graveyard. If a spell cast this way would be put into your graveyard, exile it instead.

Flying, haste
: Hellkite Igniter gets +X/+0 until end of turn, where X is the number of artifacts you control.