OP this idea is unbalanced and too powerful. Here are some changes you could make to it to make it more viable... a: The potion gives 1 level to one hero for 1 hour multiple uses on the same hero could increase the hero level but not the duration with 5 potions max capacity. B: the potion gives one hero 10 levels for one attack and is extremely rare. (Equivalent rarity to Book of Everything) and has a max capacity of 1.





