Gustavus Adolphus

Vigilance. Haste.
Whenever you untap a permanen
while you're not in an untap phase: Draw a card.
Tap another nonland permanent you control:
Gustavus Adolphus deals three damage to any target.
{w}{r/w},{t} Creatures you control get +1+1,
double strike and vigilance until end of turn.
This abilty can't be activated while you're in
a combat phase.