Flying

When Tiamat enters the battlefield, if you cast it, search your library for up to five Dragon cards not named Tiamat that each have different names, reveal them, put them into your hand, then shuffle.

Flying, menace, haste

Whenever Two-Headed Hellkite attacks, draw two cards.

Flying

Whenever Vaevictis Asmadi, the Dire attacks, for each player, choose target permanent that player controls. Those players sacrifice those permanents. Each player who sacrificed a permanent this way reveals the top card of their library, then puts it onto the battlefield if it's a permanent card.

Flying, vigilance, haste

Whenever Velomachus Lorehold attacks, look at the top seven cards of your library. You may cast an instant or sorcery spell with mana value less than or equal to Velomachus Lorehold's power from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.

Flying

Whenever Vorosh, the Hunter deals combat damage to a player, you may pay . If you do, put six +1/+1 counters on Vorosh.

Create a 6/6 black and red Dragon creature token with flying, menace, and "Whenever this creature deals combat damage to a player, gain control of target artifact that player controls."

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flying

Whenever you cast an instant or sorcery spell, Wee Dragonauts gets +2/+0 until end of turn.

Flying, haste

Zurgo and Ojutai has hexproof as long as it entered the battlefield this turn.

Whenever one or more Dragons you control deal combat damage to a player or battle, look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. You may return one of those Dragons to its owner's hand.