Execution Day

Reduce each opponent's life total to 1.
Whenever a creature under an opponent's control
dies, remove a time counter from Execution Day.
Suspend 25 -- {x}{b} Where X is the number of opponent players. (Rather than cast this card
from your hand, pay {b} and exile it with twenty
five time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.)