Parallel Thought

Transcendence

You can split your concentration to perform multiple operations at once.   You may now maintain concentration on 2 separate spells or effects at once. If you activate a third concentration effect, you can choose which effect you stop concentrating on.   When you use this ability to concentrate on a second effect, roll a hit die. You lose a number of hit points equal to your roll and your hit point maximum is lowered by the same amount. The number of dice you roll increases by 1 for every time this ability is used. Your hp max and number of dice rolled both reset when you finish a long rest.