"Evil" Paladins (i.e. Anti-Paladin) are not new to the DnD game with 5e. I am glad to see fantasy genre games blur the distinction of the traditional good vs evil or law vs chaos themes. The Dark Urge "stock" build has the benefit of the lightning charge gear in the game. If you are truly evil, does it really matter to you if you electrocute your party along with your enemies should the need arise? For a pittance of coin, Withers will provide you with all the "allies" you may require. If you want to go all in, then make use of what is already there. If you want to command a legion of undead while you are at it add a few wizard levels for necromancy.
