Double Concentration

You gain the ability to concentrate on two spells at once instead of just one. While you hold concentration on two spells, when you take damage, you must make a concentration check for each spell you are concentrating on. If you fail one or both of these checks, you will take 1d10 of psychic damage per level of the spell being concentrated on. If you choose to drop concentration on a spell yourself, you do not suffer the effects of the damage.