Your mind is inhabited by the wrath of a long-dead wizard. You can cast any spell the wizard knew before death, with a limit of 5 non-Cantrip spells if you are not a spellcaster. However, each turn, you must make a DC 14 charisma check. On a success, nothing happens. On a failed save, your mind splits momentarily, you get -1 to your next attack roll.

Additionally, you gain +3 damage to all magical attacks.