Final Countdown

This card cannot be played the turn it was added
to your hand
Suspend 20 {0} (Rather than cast this card from
your hand, you may pay {0} and exile it with 20
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.)
This card must be cast for it's suspend cost.
You win the game.