Counterport (Su)

At 4th level, a Riftwarden can ready an action to counterspell a teleportation effect that allows a creature to enter or exit an area within 30 feet of her. She can use Spellcraft to identify a teleportation effect immediately as creatures arrive and can counter the teleportation effect with an identical spell or with any conjuration spell of at least 1 spell level higher, returning teleporting creatures to their point of origin.