#2 Aleister Black vs. Bray Wyatt
Speaking of horror gone bad and Bray Wyatt, the two are synonymous with each other. Many of WWE's most cringe-worthy feuds in recent years have featured Wyatt and he's often kryptonite to anyone that feuds with him. The importation of the Broken gimmick into WWE quickly just turned Matt Hardy into a giggling idiot during his feud with Wyatt. The Ultimate Deletion was a success, but then the two teamed up and became a pair of giggling idiots.
Aleister Black has also thought about feuding with Bray Wyatt, but for his own sake, let's hope it never happens. No one comes out of a feud with Bray Wyatt looking better, even in victory. Randy Orton knows a thing or two about that.
Again, it would only descend into cringe-worthy horror gone bad. WWE shouldn't be trusted to do a feud like this.