Flying When Opportunistic Dragon enters the battlefield, choose target Human or artifact an opponent controls. For as long as Opportunistic Dragon remains on the battlefield, gain control of that permanent, it loses all abilities, and it can't attack or block.
Flying {R}: Pardic Dragon gets +1/+0 until end of turn. Suspend 2—{R}{R} Whenever an opponent casts a spell, if Pardic Dragon is suspended, that player may put a time counter on Pardic Dragon.
Flying Whenever Purifying Dragon attacks, it deals 1 damage to target creature defending player controls. If that creature is a Zombie, Purifying Dragon deals 2 damage to it instead.
{R}{R}: Rakdos Pit Dragon gains flying until end of turn. {R}: Rakdos Pit Dragon gets +1/+0 until end of turn. Hellbent — Rakdos Pit Dragon has double strike as long as you have no cards in hand.
Flying {2}{S}: Tap target creature and put an ice counter on it. Creatures with ice counters on them don't untap during their controllers' untap steps.
Flying When Siege Dragon enters the battlefield, destroy all Walls your opponents control. Whenever Siege Dragon attacks, if defending player controls no Walls, it deals 2 damage to each creature without flying that player controls.
Flying Slumbering Dragon can't attack or block unless it has five or more +1/+1 counters on it. Whenever a creature attacks you or a planeswalker you control, put a +1/+1 counter on Slumbering Dragon.
Flying Whenever Spellbound Dragon attacks, draw a card, then discard a card. Spellbound Dragon gets +X/+0 until end of turn, where X is the discarded card's mana value.
Flying, haste, protection from white {5}{R}{R}: Monstrosity 3. When Stormbreath Dragon becomes monstrous, it deals damage to each opponent equal to the number of cards in that player's hand.
Flying, haste Lieutenant — As long as you control your commander, Tyrant's Familiar gets +2/+2 and has "Whenever Tyrant's Familiar attacks, it deals 7 damage to target creature defending player controls."