What about Seadra?
It's 95 Special Attack is pretty high for UU, with 16 Pokemon being 95 or better, and only nine of them tying or exceeding Seadra's speed. It also has a respectable 95 Defense, although it's low HP and Sp. DEF hurt it a lot. It has some nice Special moves as well, with Dragon Pulse, Surf/Hydro Pump, Ice Beam, Signal Beam and the usual Hidden Power of your choice. While it's probably not suited for it due to only 65 base attack, it can also Dragon Dance and hit things like Regirock, Rhyperior and such with a STAB Hydro Pump from it's high Special Attack to clear them. While I don't see the DD set having potential, what about a Specs set?
It's 95 Special Attack is pretty high for UU, with 16 Pokemon being 95 or better, and only nine of them tying or exceeding Seadra's speed. It also has a respectable 95 Defense, although it's low HP and Sp. DEF hurt it a lot. It has some nice Special moves as well, with Dragon Pulse, Surf/Hydro Pump, Ice Beam, Signal Beam and the usual Hidden Power of your choice. While it's probably not suited for it due to only 65 base attack, it can also Dragon Dance and hit things like Regirock, Rhyperior and such with a STAB Hydro Pump from it's high Special Attack to clear them. While I don't see the DD set having potential, what about a Specs set?