Willie's Last Stand

As an additional cost to Willie's Last Stand,
Sacrifice X artifacts.
Deal X damage to target creature, if that creature
is a horror, deal X damage to all other creatures
you don't control.
"I lived a long life, Fennix, My dear granddaughter,
if there is no way to win. There is no shame in retreating, don't make your mother sad, now, dear."
- Willie To Fennix, Willie's Last Words