Mountain of Death

{t}, add {b}{b}{b}{b} in your mana pool.
deadtouch, trample, reach
As an addition cast of this spell,
exile 5 creatures from your battle field or
your graveyard or your hand .
In the begaining of each player's turn, that player
lose 5 lives unless they sacrifice a creature.
If they do, Mountain of Death
gains +X/X, while X is the toughness of that
creature.