Split Mind

Benefit: Your keen mind allows you to focus on multiple spells simultaneously. You can concentrate on a number of additional spells equal to your Intelligence modifier / 2, rounded down: (At a +2 this will be 1 additional spell, at a +4 this will be 2 additional spells, and so on). This does increase when your ability score is magically increased to 22+.

Concentration Checks: While concentrating on multiple spells, you have disadvantage on all concentration checks. Only one check is required.