Kamui, Dawn Dragonkin

Haste, first strike

{x}{w}, {t}: Target player gains X + 2 life. Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for 1 or one mana of that creature's color.)

{g/w}{g/w}{g/w}: Kamui, Dawn Dragonkin loses first strike, but gains +4/+5, indestructible, trample, menace and flying until end of turn.