>>45067287Kingdra would be way too damn good. It's stats make it so a RestTalk set would let it fight literally anything in the tier. Absolutely nothing OHKOs it without multiple boosts in UU and it'd force Pokemon to run Hidden Power Dragon just for it. Even if Kingdra's offenses wouldn't be good, they'd get the job done.
>Magneton Thunder vs. Kingdra: 151-178 (42.7 - 50.4%) -- 42.9% chance to 2HKO after Spikes and Leftovers recoveryIf you want a Dragon-type in UU, Dragonite would probably be less vicious to deal with as it could at least be dealt with via more coverage moves from Ice-types.