Please help me find a Star Wars cartoon I saw on YouTube...?

Within the last month I viewed a short Star Wars cartoon (recently made), but I can't find it now. It's not in my "watched" list. I've tried plugging clue words into the search, to no avail. It had the TFA characters in it - there was a scene where the young heroes were in the side of a building (I think they had blown a hole in it while fighting - Kylo Ren, I think? Not sure), then from above, in a small vessel, Old Luke Skywalker appears, the heroes throw him a lightsaber, and I think he connects it end-to-end with his own lightsaber and throws it back. It was pretty cool but I don't know the name. Has anyone else seen this video or know how I can find it? Thanks!