Akatsuki, the God of Thunder

First strike, vigilance, haste
Blitz Shot — {r},{t}: Akatsuki deals 3 damage
to any target.
Ouka-Kai — {1}{r}{r}{w}{w},{t}: Akatsuki deals
damage equal to its power to
target creature an opponent controls.
You can pay {4}{r}{r}{r}{w}{w}{w}
instead to overload this ability.
If you pay this cost, Akatsuki doesn't untap
during your next untap step.