Perfect Mind

Trough intensive training, you have gained the ability to maintain your concentration on up to two spells at a time. When you are maintaining your concentration on one spell, you can cast second spell that requires you concentration with ending the first.

At the start of your next turn however, you must end one of the two spell or are forced to make a Concentration saving throw. The DC for that saving throw is equal to 10 or the sum of both spell’s level, depending on which is higher.

When maintaining your concentration on two spells, you make only one Concentration saving throw for both spells. On a failed save, you lose your concentration on both spells. Concentration saving throw made as a result of taking damage are at disadvantage.