I'm using the latest patch v1.34
In a previous game (before I realized you can learn the skills of the survivor and warrior) I used the mana potions, what I've found was
minor = 40 pts
normal = 60 pts
super = 80 pts
(something like that)
While restoration potions give you hitpoints and mana, and much more than the seperate healing and mana potions.
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