Haeghli'i, Mother of Chaos

Flying, vigilance, double strike
Creatures your opponents control lose vigilance
and double strike, and can't gain vigilance or
double strike.
{b/g}{b/r}{r/g},{t}, discard a land card: target creature
gains your choice of vigilance or double strike
for the rest of the game. Haeghli'i deals 10
damage to you and doesn't untap during
your untap step.