SD luke is kinda common, its not great tho, only thing good is typing and other then typing SD quaza outclasses it
theres SD groudon, CM kyogre, Mix sweepers like dialga/palkia, CMmewtwo, NP darkrai, RP groudon, and the list goes on, just look through the uber tier and sets on smogon and try to find a sweeper, and in ubers you dont need to use only one sweeper as its pretty fast paced except for stall but if you wanna just use one sweeper its fine