One Way Trip

As an additional cost to cast this spell, exile target creature you control with two time counters on it.
It gains suspend. (At the beginning of your upkeep,
remove a time counter. When the last is removed, cast
this card without paying its mana cost. It has haste.)
Prevent all damage that would be dealt to you
and permanents you control this turn by sources
you don't control. If damage is prevented this
way, you may have One Way Trip deal that much damage to target creature.