Oversomnia is a sand Pouch Ability in Sacred Dreams, a mod for The Binding of Isaac.
Allows somnolence to be applied multiple times on one target by giving them an Oversomnia stack (max. 3).
Each stack increases the enemy's damage taken by the formula:
amplifiedDamage * (1 + stackAmount / 2.25)
When a stack is applied to the enemy, the somnolence duration slightly increases.