I've only used ultimate one time. I still resent the fact that I had to use it. I'm seriously on the verge of deleting this game. I got past Corrupt Stalwart (Infinity mM, third try) only to find the next dragons just as difficult (averaging 3-7 losses per dragon). I'm currently stuck on round 30, Artifact. I've won 3 battles in the last day and a half. Disgusting.