Emerald Spiretop

As Emerald Spiretop enters the
battlefield, you may reveal a dragon card
from your hand, Emerald Spiretop enters the
battlefield tapped unless you revealed a card this way or you control a dragon.
{3}{r}{g}, {t}: Put 2 +1/+1 counters on target dragon creature you control, it gains flying trample and haste until the end of turn.