This feat creates a coat of barbs around a single target that will cause magical damage to any attacker. The damage potential is based on the Spellcraft skill of the caster; damage is equal to 1/2 the skill ranks with a maximum damage potential of 10. The Feat lasts for 9 rounds. Activation of this feat expends one use of the Arcane Study feat. Psychic Barbs All, Scholar Gatekeeper