#5 Prepping for return of The Undertaker
This is another very popular theory because it has an end result most people would love to see. After all, nobody wanted to see The Dead Man hang up his coat, gloves, and hat after WrestleMania 33. Therefore, what is Kane's arrival is a sign The Undertaker's in-ring return is just around the corner?
Some people might discount this as wishful thinking but only time will tell if Kane's return to WWE might encourage his on-screen brother to do the same.
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When Kane takes off again to continue his political aspirations it would be nice to have The Phenom return. The actual Undertaker doesn't even need to come back that night because all WWE would need to do is turn the lights off, put up some blue lights and fog, then ring a gong.
If they threw down a lightning bolt, then it would be certain that Big Evil is coming back. All that time The Undertaker could really be in his home just chilling with Michelle McCool.
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