Dies to Removal

Cunning Breezedancer [mana]4WU[/mana]
Creature - Dragon
Uncommon
Flying
Whenever you cast a noncreature spell, Cunning Breezedancer gets +2/+2 until end of turn.
4/4

Savage Ventmaw [mana]4RG[/mana]
Creature - Dragon
Uncommon
Flying
Whenever Savage Ventmaw attacks, add [mana]RRRGGG [/mana]to our mana pool. Until end of turn, this mana doesn't empty from your mana pool as steps and phases end.
4/4

Ruthless Deathfang [mana]4UB[/mana]
Creature - Dragon
Uncommon
Flying
Whenever you sacrifice a creature, target opponent sacrifices a creature.
4/4

Enduring Scalelord [mana]4GW[/mana]
Creature - Dragon
Uncommon
Flying
Whenever one or more +1/+1 counters are placed on another creature you control, you may put a +1/+1 counter on Enduring Scalelord.
4/4

Swift Warkite [mana]4BR[/mana]
Creature - Dragon
Uncommon
Flying
When Swift Warkite enters the battlefield, you may put a creature card with converted mana cost 3 or less from your hand or graveyard onto the battlefield. That creature gains haste. Return it to your hand at the beginning of the next end step.
4/4

Acid-Spewer Dragon [mana]5B[/mana]
Creature - Dragon
Uncommon
Flying, deathtouch
Megamorph 5BB
When Acid-Spewer Dragon is turned face up, put a +1/+1 counter on each other Dragon creature you control
3/3