uncommon cantrip enchantment mental psychic 

Cast [>>] somatic, verbal

Range 30 feet; Targets 1 creature

Saving Throw Will

You place a psychic lock in a foe's mind that prevents it from a specific action. Choose "Strike," "Stride," "Cast a Spell," or a specific action you know the creature to have (such as "Breath Weapon" against a dragon). If the creature attempts that action on its next turn, it must surmount your lock to do so, causing it to take 1d6 mental damage plus your spellcasting ability modifier (with a basic Will save). The target is then temporarily immune for 1 minute.

Heightened (+1) The damage increases by 1d6.

Amp Your telepathic push is particularly shocking to those who resist it. If the target fails its save, it's also stunned 1.

Dark Archive, page 21.