Fury of the Mindless

Due to your sheer lack of mental ability, you gain the following benefits:

• When you are subjected to a spell or spell-like effect that forces you to make an Intelligence, Wisdom, or Charisma saving throw, you can use your reaction to hit yourself in the face. When this is done, you automatically succeed all Intelligence, Wisdom, or Charisma saving throws until the end of your next turn as your mind is too focused on the pain it just received to be controlled or altered in any way. The damage of the strike against yourself is the maximum possible damage of your current melee weapon (or an unarmed strike if you have no melee weapons in hand). You also take psychic damage equal to your character level as a result of pushing your feeble mind to it's limits. You additionally take half your level in psychic damage for every additional spell you auto pass as a result of taking this reaction.
• If a creature subjects you to a spell or spell-like effect that forces you to make an Intelligence, Wisdom, or Charisma saving throw, you have advantage on all attacks against that creature until the end of your next turn.
• If you are under the effects of a spell or spell-like effect that requires you to make Intelligence, Wisdom, or Charisma saving throws at the end of each of your turns, you can use your action to end the effect. When you do so, you take psychic damage equal to your character level as a result of pushing your feeble mind to it's limits.