Oth'Kahn, Primal Blade

Double strike
This spell can't be countered.
Other Angels you control gain double strike.
{5}{w}{u}{b}{r}{g}, {t}: Sacrifice 10 Angels you
control; you gain an additional combat phase.
Oth'Kahn, Primal Blade gets +1/+1 for each
attacking creature until end of turn.