Magical multitasking

You are very good at preforming multiple tasks at once, and as such, now have the ability to concentrate on multiple spells at the same time.

The amount of concentration spells you can cast at once becomes 1 + spell casting ability modifier (min of plus 1) Casting another concentration spell after you already have your max amount of con spells active drops concentration on the earliest con spell you casted.

The DC for the Constitution saving throw for maintaining concentration on your spell becomes plus 3 for every concentration spell you have active at once above 1 (for example if you have 4 con spells active the DC becomes 19 rather than 10). Failing the save causes you to drop concentration on all the spells at once