I don't understand the Fire of War Quickening at all. I've been like randomly shuffling and waiting for the Triangle to pop and it doesn't show up, I don't really know how to make it work. Most of the time I don't even get it to work properly and I just do around 600. I was randomly messing with it on the Demon Wall boss and managed to do the triangle thing twice and then I had this Inferno special, which did like 4,000 dmg. Could someone explain it to me?
Edit: Tips on the Demon Wall boss?