As the topic says i’ve encountered a bug where if i level up while doing tempest, it has no mana cost and i can spin forever (Tazmania monster :P). That or if i am to reduce the mana cost of tempest to a point where it begins to slowly regen mana, but also at a point if i open Ephemeral Stance it would spend mana. I can fill mana while spinning but when my mana goes max while spinning it won’t drain the mana if i open Ephemeral Stance. Sorry if i made a mess explaining it :S
Looking forward for Ephemeral Stance skill tree, VK forever <3