Flying
Whenever Chief Executive Dhante enters or attacks, create a Treasure token, then you may pay {X}. Spend only mana from artifact sources, and X can't be 0. When you do, destroy target nonland permanent with mana value X or less.

Flying, lifelink
{2}{W}: Untap each creature you've activated this turn. They get +1/+1 and gain lifelink until end of turn. Activate only once each turn.

Flying, ward {1}
Whenever you cast an instant or sorcery spell, mill a card. Return an instant or sorcery card milled this way to your hand. If you can't, put a +1/+1 counter on Covetous Frostwyrm.

Flying
Amity — Whenever you attack with Earthbreaker Dragon and exactly one other creature, Earthbreaker Dragon deals 1 damage to each of up to two target creatures without flying.

Flying
If a Dragon you control would deal damage to an opponent, it deals that much damage plus 1 instead.
{2}{U}{R}: Transform Iviana's Spellmaw.

Flying, trample
If a source you control would deal damage to an opponent or a permanent an opponent controls, you may have it deal twice that much damage instead if it's a Dragon or Iviana planeswalker. Otherwise, it deals that much damage plus 2 instead.

King of Currents can't attack unless there are six or more cards in your graveyard.
Surface {4}{U}{U}

Haste
Landfall — Whenever a land you control enters, Leaping Hatchling gains flying and trample until end of turn.

Flying
When Malicious Skycleaver enters, pay any amount of life. It deals that much damage to each other creature.
Cybersoul {7}{B}{B}

Flying
Whenever Molten Slagmaw enters or attacks, each opponent sacrifices an artifact or nonbasic land.

Flying
Amity — Whenever you attack with Nimbus Dragon and exactly one other creature, tap target creature defending player controls.

Flying, haste
When Plasmana Hellkite enters, it deals 2 damage to any target and 1 damage to any other target.

Reach
When Sandstorm Devil enters, it acclimates.
As long as you control a Weather or another Dragon, Sandstorm Devil has menace.

Flying
Ward—Sacrifice a nonland, nontoken permanent.
Whenever a creature dies, Shredding Dragon deals 1 damage to any target.

Flying, trample, lifelink
Ward—Pay 7 life.

Flying
When Stratus Fledgling enters, it acclimates.
Weather spells you cast cost {1} less to cast.

Flying, haste
Instant and sorcery spells cost {2} less to cast.
Whenever an opponent casts their second spell each turn, create a 5/5 red Dragon enchantment creature token with flying.

Flying
Ward—{2}, Pay 2 life.
Whenever you cast a noncreature spell, draw a card.

Flying, trample, haste
Vishanki Hellkite enters with a +1/+1 counter on it for each mana from an artifact source spent to cast it.

Flying, haste
Amity — Whenever you attack with Warden of Heart and exactly one other creature, you may put a legendary or Dragon card from your hand onto the battlefield tapped and attacking.

This spell can't be countered.
Flying, vigilance, trample
Players can't cast spells from anywhere other than their hands.
Spells your opponents cast that cost less than five mana to cast and target you and/or spells or permanents you control cost five mana to cast.

Flying
Amity — Whenever you attack with Warden of Soul and exactly one other creature, search your library for a legendary or Dragon card, reveal it, put it into your hand, then shuffle.