Potion of Mana

On use, roll 1d20
1: You become delirious, take 1d6 psychic damage
and become incapacitated for 1 round of combat.
Regain 1 expended spell slot (ESS) between 1st
and 2nd level
2-10: Regain 1 ESS between 1st and 2nd level
11-16: Regain 1 ESS between 1st and 3th level
17-19: Regain 1 ESS between 1st and 4th level
20: Regain 2 ESS between 1st and 4th level