What powers would be associated with a rage player?

That’s way too broad without a Class. As the Canon Quiz implies, Rage is tied to Chaos, Anarchy and Violence. There’s a lot of ‘Storm’ references in the Sign of the X thing for the Extended Zodiac too, so it implies its ties to turbulent times and weird stuff like that as well. But as for Powers in themselves, I don’t know? It’d depend on the Rage Player.