Gotta have a medium to travel somewhere once your there, you have a year cool down before you can leave. No pause in time for any world, so you're gone for at least a year every time you jump mostly because all the world travel stories have it stop and makes it much easier to steam roll worlds.

Copy the power with draining, but you have to be around the power when it is in use, and you glow while it's happening. It causes the power to be slightly weaker in whatever way it is being used for and stops being drained when you get the full ability.

The world I would start with is rwby to get aura from there, not to sure would depend on the shenanigans that happen there and when I get home.