Maxie, Eater of Men

Haste
When Maxie, Eater of Men, enters the battlefield,
each player must either sacrifice a human
creature or lose three life. Maxie gains 1/1 for
each human sacrificed this way until the end of
turn.
{b/r}{b/r}{b/r}{t}, Maxie does 3 damage to each human
other players control.
I'm so scared right now. - Emilio Gray