I have a question. Why can't we use Gliscor like a Walrein? It gets the 12% recovery, and arguably has much better defenses and typing, not to mention better speed. It's a shame it doesn't get Roar or Whirlwind, but that's the only thing it's missing. If it's running in a Sandstorm, you still get the residual damage as well, and Gliscor's Earthquake will deal heavy damage to anything immune to Sandstorm or Toxic.
Specially Defensive (Unless it's Ice)
Gliscor @ Toxic Orb
Nature: Careful (+SpD, -SpA)
252 HP / 4 Def / 252 SpD
Ability: Poison Heal
- Substitute
- Protect
- Toxic / Taunt
- Earthquake
This loadout gives Gliscor 354 / 287 / 273 defenses to work from, whilst also being very easy to switch in thanks to his immunities to Electric (becoming much more common) and Ground (also a massive threat in this metagame) So you can easily get a substitute up on something choiced into either of these attacks, or just something that's slow and threatened by Earthquake. And then you can just spam from there, if you've got a Sandstorm up (Tyranitar says hi) and finish slower pokes with Earthquake.
Also, if you it to be more physically based, you can run an Impish nature and get 354 / 315 / 249 instead, and if you're going Hardcor, then you can run 252/252/4 Impish and get 354 / 383 / 187 instead.
Pros over Walrein
> MUCH MUCH MUCH better typing.
> Can use a much more common weather and be just as effective thanks to STAB Earthquake gaining excellent coverage against pokemon that are immune to Sandstorm and Poison.
> If you have Toxic Spikes up, then Taunt becomes very helpful for scouting switchins, alongside Protect, whilst also spreading the poison if you Taunt a setup pokemon.
> Unpredictability. The opponent won't know you're running Stallcor just from putting it in front of them, since Toxic Orb looks viable on semi-offensive sets and baton passers too.
Cons over Walrein
> Stopped cold by Rain Dance, unless you have Toxic Spikes support and have a Sub up when they Rain Dance.
> Slightly lower defenses, compensated for by better speed and STAB Earthquake.
> No Super Fang or STAB Blizzard / Brine to abuse, although STAB Earthquake is fine.
> No Roar to phaze opponents with. The only major issue. D: