#3 Aleister Black vs. The Undertaker

Aleister Black has an impressive aura surrounding him and still comes across as genuinely frightening. The only superstar who's managed to preserve this sort of fear factor over the course of their career is Undertaker, who still carries it with him today.
This could be a perfect passing of the torch feud for Undertaker when he finally does decide to call it a career. However, WWE would be smart not to try and turn Black into the next Undertaker and must keep what makes the sister man from Amsterdam original.
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If creative went a similar route as the Bray Wyatt vs. Undertaker feud where Wyatt claimed to be the new face of fear and obviously executed this feud far better than they did in that case, Black could take up the mantle as the scary grim reaper-like presence in the WWE without losing any of his original and organic edge.
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