How about this, what do you think of this Dusclops?
Dusclops@Eviolite
Ability:Pressure
Bold Nature
EV: 252 Def/ 252 SpD/ 4 HP
-Pain Split
-Curse
-Substitute
-Haze
Its Eviolite-boosted bulk means stalling time. Curse to deal with bulky stallers. Substitute to set up. haze to stop your opponent from setting up. Pain Split to heal HP after losing 3/4 of your entire HP. Pressure to make your opponent lose more PP of their moves. Bold nature to boost the bulk. max defense and max special defense for the amazing bulk and 4 HP to, well, at least its related to stalling because you will need a good amount of HP to stall, but since Dusclops bulk is already sky-high now, I'd do 4 HP.