#3 A cage made of bones

The Undertaker's name is synonymous with the Hell In A Cell match. The Deadman has easily participated in more number of Hell In A Cell matches than any other WWE Superstar. This match is known to be brought into existence because of this man. It would be fitting to see The Deadman come to life in a match he inaugurated.
The WWE has had its fair share of mixing things up in a steel cage/HIAC match. We have witnessed a Punjabi Prison Match, an Asylum Match and even a steel cage match with the top of the cage surrounded by barbed wires.
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The cage could be made to look like it is made of bones. This is a chance for WWE to repackage the Hell In A Cell match while allowing a few unbelievable spots since AJ Styles is involved. This would peek viewers interest and would be something the internet would be talking about for years to come.