I use this set.
Dragonair @ Eviolite [Marvel Scale]
252 HP/ 252 Sp. Def/ 4 Attack [Is it CAREFUL that does +Sp. Def, -Sp. Attack?)
Eviolite, Marvel Scale, and amazing typing in the NU Metagame makes this set incredibly difficult to take down. I run this alongside more Paralysis (Probopass because synergy), full entry hazards, a spin blocker (Misdreavus because WoW), and two slow ass hard-hitters (Specs Glaceon and Expert Belt Mixed Emboar). The team works by wearing and slowing the team down with hazards and paralysis support, respectively. Then late-game when everything is struggling, you come in with something as menacing as a frozen kitty cat or pig on fire and kill everything. Emboar and Glaceon work really well together.