So I put on my sunsinger with claws of ahamkara and the perk that gives me an extra grenade. When I load into the plaguelands I only have 2 gernades and mele, when the artafact is supposed to give me 3. It does take my super away.
-
I think I remember reading somewhere that the extra melee and grenade charges from Memory of Felwinter do not stack with other items giving the same perks.