Quote Originally Posted by Morph Bark View Post
Alright, that's good then. Why do you think it needs clarifying though? Or rather, I can see why maybe, but how? I think it's obvious it cannot be used while they're in the air, or swimming, or climbing a tree, or balancing on a rope (but they could use it while balancing on a slope).

Make it "standing on solid underground" instead?
Power name suggest some more or less supernatural bind with earth, and all, so I guess one just should know if it can be anything you can stand on, or just natural ground, for example.