Yuyuko Saigyouji

Deathtouch
{4}{b}, {t}: Destroy target creature.
Whenever a nontoken creature dies, create a
1/1 white and black ghost creature token.
Sacrifice 3 Ghosts: Gain 5 life.
Sacrifice 5 Ghosts: Yuyuko gains
indestructible until end of turn.
Sacrifice 15 Ghosts: Target player loses the
game.