Location of Pain Skull

[Vomaxx]

I found it somewhere in mid-game (I think--I have not yet finished the game) and have been using it consistently, even in the fight with Karador. It's now down to about 12% and I can't wait to see what happens when it's at zero--if I can win the next couple of battles. I think it goes down at about 3%, at least for the larger kind of fights I've been in since I had it. It will be very nice to get full mana back.