Gen 8 NU
Guzzlord @ Leftovers
Ability: Beast Boost
EVs: 32 Atk / 252 SpA / 40 SpD / 184 Spe
- Knock Off
- Heavy Slam
- Dark Pulse
- Draco Meteor
Mixed Guzzlord set. I didn't create this set, but an Showdown player named Young Lilo did, so credit goes to him.
Knock Off is dark type STAB that removes items from opposing Pokémon. Heavy Slam is for dealing with fairy types like Sylveon, Diancie, and Comfey. Dark Pulse is special dark STAB that can target physically defensive Pokemon like Mudsdale, and can be useful against Iron Press + Body Press Bronzong. Draco Meteor is strong dragon STAB that hits dragon types super effectively. 252 EVs in special attack help to make Guzzlord's special attacks hit hard. 184 Speed EVs helps you speed base 65 Pokémon while also outspeeding Sylveon and Diancie. 32 Attack EVs along with an attack boosting nature can allow Guzzlord to 2HKO Sylveon and Comfey on the switch after Stealth Rock, and can OHKO Diancie if it's not physically defensive, as shown in these calcs:
32+ Atk Guzzlord Heavy Slam (120 BP) vs. 252 HP / 252+ Def Sylveon: 186-220 (47.2 - 55.8%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
32+ Atk Guzzlord Heavy Slam (120 BP) vs. 252 HP / 232+ Def Comfey: 156-184 (50.9 - 60.1%) -- guaranteed 2HKO
32+ Atk Guzzlord Heavy Slam (120 BP) vs. 252 HP / 4 Def Diancie: 276-328 (90.7 - 107.8%) -- guaranteed OHKO after Stealth Rock
The rest of the EVs are dumped into special defense.
, , and/or other Fighting resists
Sylveon can cure Guzzlord's status conditions if it gets inflicted by status, and can deal with fighting types, and Guzzlord can deal with poison and steel types. Xatu can bounce back status conditions and can bring in Guzzlord via Teleport. Some other fighting resists you can use are Talonflame, who can threaten most fighting types with a burn, and Garbodor, who also set up Spikes to help put opposing Pokémon in range of Guzzlord's attacks.
, (Choice Scarf), other fast wallbreakers
Since Guzzlord can tend to struggle against fast wallbreakers that can do super effective damage to it, fast wallbreakers that can damage them is pretty nice to have and can provide speed control.