Haven of the Spirit Dragon

Flying

Whenever another nontoken creature you control enters, bolster 1. (Choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it.)

Double strike Whenever this creature enters or attacks, another target Warrior creature you control gains double strike until end of turn.

Target creature gets +2/+2 until end of turn. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Flying Double strike (This creature deals both first-strike and regular combat damage.) Megamorph 4W (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Flying When this creature enters, bolster 1. (Choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it.)

Enchant creature Enchanted creature has double strike. (It deals both first-strike and regular combat damage.)

Target creature you control gains protection from the color of your choice until end of turn. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)