#2 Interferes in WWE Title match
It wasn't too long ago when The Undertaker graced SmackDown Live with his presence and sent a chilling warning to everyone that he's there for 'taking souls and digging holes'.
As it would turn out, he didn't manage to do much of either as he would then busy himself in a feud with Roman Reigns.
A female WWE star said her life is in danger. Details HERE
SummerSlam, however, could be the perfect opportunity for him to revisit that statement.
Just imagine the rub that someone like Jinder Mahal or Shinsuke Nakamura would get should The Undertaker interfere in the WWE Title match to set up a potential encounter down the line.
Also, it would really make whoever is holding the Championship seem like a really big deal on the Blue brand.