Multitasker

You can concentrate on any number of spells (or actions, if applicable) that require concentration with the following restrictions

• At the beginning of each your your turns while concentrating on more than one spell, make a constitution saving throw to maintain concentration. The DC for this save is 10 + the sum total of spell levels you're concentrating on. For example, if you're concentrating on a 1st, a 2nd, and a 3rd level spell, you must pass a DC 16 (10 + 1 + 2 + 3) constitution saving throw or lose concentration on a spell of your choosing. After any failures, repeat this process until you are only concentrating on a single spell On a success, continue your turn as normal. Also, recalculate the saving throw DC after each failure. Using the previous example, if you failed the DC 16 save and decided to stop concentrating on the 2nd level spell, the new spell save DC would be 14 (10 + 1 + 3). If you succeed, you maintain concentration on both spells, if you failed you would stop concentrating on either the 1st or the 3rd level spell. If you failed you would be concentrating on only one spell and would not make another concentration saving throw.
• When you take damage or otherwise have to make a concentration saving throw, increase the DC by 1 for each spell beyond that first that you're concentrating on. For example, if you took 24 points of damage you would normally need to make a DC 12 constitution saving throw (half the damage or DC 10, whichever is higher. In this case 24 ÷ 2 = 12 > 10). However, if you were concentrating on three spells, the DC would increase by 2 since you're concentrating on two more spells than normal, giving a total of 14 (12 + 2). This DC applies to each spell you're concentrating on and is not recalculated if you lose concentration on one or more spells.
• You cannot concentrate on the same spell more than once.