This is a thought I've had floating around my head for a while, how do you end the career of the phenom, the man who's been buried, burned battered and bruised but always came back for more. The one solution I had was you don't, warning this is where we get into cheesy shitty horror territory. After Taker wrestles his last WM match and is laid out on the mat a beam of light flashes out and Paul Bearer voice is heard saying it's time for him to rest Again, Bearer walks around surrounded by druids holding the urn. He gets in the ring and places onto Takers chest then orders the druids to carry him out. The next night on Raw bearer comes out and Reveals Mark was a vessel for the spirit of the undertaker and now he's resting in the urn once again with the remains of his parents. This allows appearances from Mark as himself without being shackled by the characters restraints. Now I know this is very late night straight to tv film but the urn was always seen as a source of power for Taker and hes always been that kind of horror throwback character so I guess it fits.