Hysterical Blindness
Innistrad — common
Instant
Hysterical Blindness rulings:
2011-09-22: Only creatures controlled by your opponent when Hysterical Blindness resolves will get -4/-0. Creatures that enter the battlefield or that an opponent gains control of later in the turn will be unaffected.
2011-09-22: Hysterical Blindness’s effect will continue to apply to a creature even if you (or a teammate) gains control of that creature later in the turn.