The Nightmare

Vigilance, Deathtouch, Menace
{w/b}: Target creature becomes a 1/1 white spirit with flying until the beginning of your next turn.
{1}{w/b}{w/b}: Each player sacrifices a spirit.
{w/b}{w/b}{w/b}{w/b}: For each opponent, gain control of a spirit that player controls until end of turn. Untap them and they gain haste until end of turn.