The geography would mean moderate-large type things within a relatively short amount of time. If you dig out a cave system or lava trench that would have to be gradual and not all the sudden. We'll trust you to keep that reasonable.

Things like mountains, lakes or valleys would fall under the no-no category. If it can be marked on a map, it's not a good idea. Special occasions can be arranged though!

I don't see why he couldn't arrive with a powerless ring. If you want to do something major with it and you're not sure if it's allowed you can always check back with us about it.

We all good?