Maybe it's just a casualty of the simplification, but I noted that the Turn Undead ability doesn't reference alignment, or mention the word 'rebuke'. I thought maybe 'oh, well they left it in the DMG, with all the other 'evil' options, like Death Domain, and Fallen Paladins', but I didn't see it there, either. Since most 'good' clerics channel positive (healing) energy, turning makes sense, but most 'evil' clerics seem more likely to channel negative (necrotic) energy, so rebuffing undead with negative energy, or buttering them up by enhancing them (clearly en enemy wouldn't do that ), it seems weird that half the mechanic is now gone. I suppose they could fall back on that old chestnut, 'but we assume you are all playing 'GOOD' characters, and such characters would only turn undead, anyway', but as we all know with any 'old chestnut' reference, this can be silly, and wrong of them to assume.
Rambling done. So, did I just miss the obvious entry for it, or did they choose to get rid of it, for some unfathomable reason? Just curious, as I'm still learning the differences between 5E, and its relatives. I thought, for a moment, that maybe they sacrificed rebuke for Necromancer, to give them something, but nope. Minionmancer gets something, but it's only at the upper end of what many people will ever play, and somewhat limited, anyway. So, someone please help me find it if I missed Rebuke Undead in the PHB, DMG, or Monster Manual, or help me understand why clerics of Velsharoon are now demolishing the undead he makes? Thanks much.