Switch target creature's power and toughness until end of turn.
The overconfident are the most vulnerable.
Melissa A. Benson
Legal in Legacy
Legal in Vintage
Legal in Commander
Legal in Pauper
Legal in Penny
Note that the wording “Effects that alter the creature’s power alter its toughness instead, and vice versa, this turn” has been removed.
Effects that switch power and toughness apply after all other effects that change power and/or toughness, regardless of which effect was created first.
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.