Inescapable Grasp

Your grasp has a supernatural quality to it, preventing your foes from easily escaping—with or without magical assistance. If a creature you have attempts to use a teleportation spell or effect, it must succeed at a flat|dc:15 or the spell fails. If a creature you have grabbed attempts to while under the effect of or a similar effect, it must succeed at a flat|dc:15 or be forced to roll the Escape attempt normally, rather than automatically succeeding.