How many are there all togather? 6? 5?
Last one unlocks all the level 3 potions.
Two of them unlock strenght and shadenfraude.
That leaves 3 if there's 6 and 2 if there's 5?
Last one is in magma mines, there's one in Berserker camp, there's 2 in the first directionals... I'll look it up in one of my playthrough logs