You know, for someone who is supposed to be the Emperor of the Allagan Empire, he sure does have a pension for stealing abilities from other people.

Burning Rave? That's one of Zell's Limit Breaks.
Aura Cannon? One of Sabin's Blitzes.
Starfall? Emperor Mateus's signature move.

What's next, Xande? Gonna steal Big Bang from Zeromus? Almagest from Exdeath? Dolphin Kick from Tifa?

Learn your own blasted moves, for the love of the Twelve!