9. Punishing Bray Wyatt
The last time fans saw The Undertaker he was engaged in a war with Bray Wyatt. The battle looked to be over after WrestleMania 31, with The Undertaker winning convincingly on the grand stage. But maybe Taker's character feels like justice hasn't been done, not while Wyatt's character is on the loose and stalking little girls. So maybe he'll make a shock appearance in the Bray Wyatt versus Roman Reigns match at Battleground. The heel has been stalking Roman and his daughter, in a feud that will culminate this Sunday. Perhaps at the end of it, Wyatt wins, only for Taker to come out. It would make sense in that there's an established narrative and both men are comfortable working a match together. It would also give Wyatt a chance to maybe take a win back, enhancing his own stature in the company.