Robin tries to steal magic from Rumple and Rumple steals his bow? Do we think he kills Robin? Rumple is obviously aiming at something there. In the promo, I believe when they say “he goes by Robin Hood” the Robin character is already wearing the bow and carrying arrows (I also think he’s in Belle’s room?). If Robin has broken in to steal magic, discovers Belle and (given that she’s in the gold ball gown and thus it’s early on in the relationship) promises to rescue her, Rumple could go after Robin.
And this might parallel to several things in SB.1) Robin stealing magic = Tamara trying to steal magic. I think Rumple will meet Tamara for the first time in this episode. 2) Robin trying to save Belle from Rumple = Lacey going out on the town and maybe getting chatted up by this Keith character.