Agra's Ambush

You create a mental trap that springs whenever your mental faculties are tampered with. Whenever the target is affected by spells or magic effects that charm, frighten or force a certain behavior out of them caused by a creature, the target can force that creature to roll an intelligence saving throw, taking 4d6 psychic damage and losing the spell or magic effect on a failure, half the damage and no extra effect on a success.