Hmm, let's see. Either an EPIC or a rocker, but which ones?
Moviedrom is THE Arena EPIC without a doubt, but I fear that one is a tad to long
First thing that came to my mind was Cutting the Cards, followed by Ascension. I think those two songs are almost perfect as "album closers" so they might also work as an encore. Plus, you'll have the rocker and EPIC