Shang Tsung, Soulstealer

Whenever Shang Tsung enters the battlefield or
attacks, exile target card from a graveyard and
put a soul counter on it. When you do, target
opponent loses 1 life and you gain 1 life.
{2}{u}: Shang Tsung becomes a copy of target
creature card in exile with a soul counter on it
until end of turn. Activate only as a sorcery
unless the card is a Monk, Ninja, Samurai,
Soldier, or Warrior.