Did we? Honestly, the only reason I didn't delete that is I can't be sure about the Known Object. It's theoretically a valid power if there's KU's for it. The Sword of Jo-Lan is from some animated kids series from 2005, and the only reference I can find to the sword is that it's in the title of an episode and someone named Dragon brings it back. Nothing about it's powers.
It sounds vaguely familiar, but tbh a lot of the powers start to king of blur after a while. In any case, I don't think there's anything wrong with the idea of the power specifically. Just that it is lacking in KU's (or at least valid ones)