Reverse the Polarity
From Doctor Who set
Reverse the Polarity
Instant
Choose one —
- Counter all other spells.
- Switch each creature's power and toughness until end of turn.
- Creatures can't be blocked this turn.
Rulings
- Effects that switch a creature's power and toughness apply after all other effects, regardless of when those effects began to apply. For instance, if you switch a 2/4 creature's power and toughness and then give it +2/+0 later in the turn, it's a 4/4 creature, not a 6/2 creature.
- Because damage remains marked on a creature until the cleanup step or an effect removes that damage, nonlethal damage dealt to a creature may become lethal if you switch its power and toughness during that turn.
