Cthulhu Awakening

As an additional to cast this spell, you may
sacrifice X creatures. Cthulhu Awakening can't
be countered as long X is more then 15.
In a random order, each player is loosing the
game, you at least.
Intervention - Player may sacrifice X creatures
plus one to reroll the order.
"This is the end of the world!"
—Last living human