Mannichi, the Fevered Dream
Betrayers of Kamigawa — rare
Legendary Creature — Spirit
Mannichi, the Fevered Dream rulings:
2013-04-15: Effects that switch power and toughness apply after all other effects that change power and/or toughness, regardless of which effect was created first.
2013-04-15: Switching a creature’s power and toughness twice (or any even number of times) effectively returns the creature to the power and toughness it had before any switches.