Talk:Rose's Scabbard/@comment-25543185-20150402210538/@comment-26231572-20150404142238

It was explained in the episode. Lion has something to do with Rose; no one knows exactly what yet - but it is clear that Lion knew Rose. (I've seen people theorise that he's one of her living plants though)

In the episode Lion 2: The Movie, Lion took Steven to the place that Pearl took him in this episode - that's how he knew it. He also knew where Rose's sword was because he'd seen it in Lion 3: Straight to Video when he entered the pocket universe in Lion's mane.