Potion of Superior Mana

On use, roll 1d20
1: You become delirious, take 1d10 psychic damage
and become incapacitated for 1 round of combat.
Regain 1 expended spell slot (ESS) between
1st and 6th level.
2-10: Regain 1 ESS between 1st and 7th level
11-16: Regain 1 ESS between 1st and 8th level
17-19: Regain 1 ESS between 1st and 9th level
20: Regain 1 ESS between 1st and 9th level
+ 1 up to 7th level