@Scheisskopf; The idea of Smack Down is to beat these things on the switch whilst still offering a viable way oh hitting still like Torney and Thundey on the switch and not nerfing his team with the gravity effect. The sets designed to lure and kill bulky skills so I'm presuming it is being used in conjunction with Stoutland in the sand. If you are using this set for any other reason then run Gravity (Or HP Ice Naive) and Stone Edge, since otherwise you can't even KO Tornadus and Thunderus-T on the switch after ricks damage.
@Plumbumb; Leftovers really isn't needed on the set, Life Orb gives better damage output and Landorus' bulk isn't exactly great.
Also, you could stick on HP Ice over Substitute and Naive. (Either that or put Gravity over Smack Down and Stone Edge over Sub).