I was messing around with possible sets for Guzzlord and found something interesting:
Guzzlord @ Leftovers
Ability: Beast Boost
EVs: 72 HP / 252 Def / 180 SpD / 4 Spe (if Calm) or 72 HP / 180 Def / 252 SpD / 4 Spe (if Bold)
Calm or Bold Nature
IVs: 21 Atk / 0 SpA
- Dragon Tail
- Toxic
- Rest
- Sleep Talk
The moveset itself isn't really innovative as it has been used multiple times in the past. The weird part resides in the EVs, natures and IVS of the set. With 252 Def / 180+ SpDef or 180+ Def / 252 SpDef, Guzzlord obtains 205 in both defenses. However, even without any investment, both of its offensive stats are greater than 205 (with neutral natures, 238 and 230 respectively). To solve this problem, the Atk stat must be lowered down to 205 by giving Guzzlord either a Calm or Bold Nature (depending on the chosen EV spread) and by reducing its Atk IV to 21, and the SpAtk stat must lowered down to 205 and below by reducing its SpAtk IV to 0-6.
Why all those specific spread shenanigans? Well, If Guzzlord does get a KO by repeatedly shuffling and Toxic-stalling the opposing team, Beast Boost will activate and boost its Atk, Def and SpDef stats by one stage, making it even more dangerous and hard to take down!
I only hope that Beast Boost actually works that way when some stats possess the same value and that this kind of set will be a legitimate option for Guzzlord.