Roiling Horror's power and toughness are each equal to your life total minus the life total of an opponent with the most life.
Suspend X — . X can't be 0. (Rather than cast this card from your hand, pay its suspend cost and exile it with X time counter(s) on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost. If it's a creature, it has haste.)
Whenever a time counter is removed from Roiling Horror while it's exiled, target player loses 1 life and you gain 1 life.
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