#4 A graveyard match/home of the mystical Undertaker
A boneyard may also be interpreted as a yard where bones lie, which is nothing but a graveyard. We have seen The Undertaker cut numerous promos in graveyards while saying that his opponent will rest in peace. What better place to bring back The Deadman, who according to AJ Styles isn't the same man he once was.
WWE has tried and tested location-based brawls and matches such as home invasions, House of Horror Match and the Ultimate Deletion Match. These types of matches haven't been widely accepted by the Universe yet, but they do promise something different. If WWE does pull this off well, it could be The Undertaker's greatest match in WWE history.
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We could see special appearances by Kane or could even see Michelle McCool in a new avatar. The Undertaker's powers and mind games would prove to be the main attraction to such a match. The possibilities in such a match are endless and if WWE digs deep into The Undertaker's character, this match will truly be a spectacle.