Bane of Erudition

 Brilliant turquoise flames engulf your hand for 3 rounds, or 20 seconds. Whenever you attempt to grapple a creature while Bane of Erudition is active, you can specify that you are trying to grab the target's head. If you successfully grapple a creature in this way, it immediately suffers (2d8 + your Intelligence modifier) as Psychic damage as the magical flames burn away its mind.

For every round spent like this, the target suffers (2d8 + your Intelligence modifier) as Psychic damage, with an additional 1d6 per round spent grappled. If Bane of Erudition reduces a creature to 0 HP, it cannot be revived, as its brain and skull have been reduced to slag.

If the target creature has a negative Intelligence modifier, the damage dealt to it by Bane of Erudition is reduced by 3 for every negative point.

If the target creature has a positive Intelligence modifier, the damage dealt to it by Bane of Erudition is increased by 3 for every positive point.