Games Of Thrones Season 6: 9 Clues From "The Broken Man" Trailer
3. Oh Dear Edmure

Having been squirrelled away in Walder Frey's dungeons (where someone seems to have been keeping him mostly clean shaven for some reason), Edmure made his less than triumphant return in Blood Of My Blood, and it's inevitable he's going to be used by the Frey army to taunt Blackfish on the battle field.
Given how sniveling the Freys look (not to mention woefully under-prepared for battle with their little leather hats in place of actual helmets), that's got to be their only tactic, since they appear to be terrified of Blackfish.

To be honest though, is there actually anyone in all of Westeros who would care if Edmure died? Blackfish can't even be all that proud that he's even related to him, and he's hardly going to give up because he's under threat.