

Just take ONE look at Gliscor and tell me he's not gonna troll you for the next 80 turns. That's the face of a sadist, I swear.
Gliscor @ Toxic Orb
Ability: Poison Heal
EVs: 244 HP / 8 Def / 200 SpD / 56 Spe
Careful Nature
- Taunt
- Toxic
- Roost
- Earthquake
Landorus @ Life Orb
Ability: Sheer Force
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Earth Power
- Focus Blast
- Rock Slide
- Sludge Wave
Ability: Poison Heal
EVs: 244 HP / 8 Def / 200 SpD / 56 Spe
Careful Nature
- Taunt
- Toxic
- Roost
- Earthquake
Landorus @ Life Orb
Ability: Sheer Force
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Earth Power
- Focus Blast
- Rock Slide
- Sludge Wave
Gliscor almost 6-0s this stall team, as it has been one of the premier stallbreakers since Gen 4 when it first debuted. Basically the way it works is you activate your Toxic Orb safely and Gliscor can basically no longer die before it runs out of PP. The strategy is to Toxic all the foes and use Earthquake to slowly chip them all down. Use Taunt on Alomomola to prevent Wish passing, Azumarill to prevent Perish Song, Quagsire to prevent Recover, and Lanturn to prevent Heal Bell. After Taunting these 4, you are free to use Toxic or Earthquake on them to your heart's content.
Tentacruel and Empoleon are slightly more problematic, but really it's a nonissue. Earthquake gets a 2HKO on Tentacruel, which would otherwise attempt to do some Acid Spray shenanigans. For that reason, never switch Gliscor into Tentacruel to guarantee you win the 1v1. Empoleon's Scald can actually 2HKO Gliscor, but luckily Earthquake can 2HKO Empoleon. Beware of Torrent, which has a pretty good chance of activating after the first Earthquake. Gliscor must be at near full health to survive the Scald.
So basically, Taunt, Toxic, Earthquake, Roost when needed, rinse and repeat.
Noticeably, Gliscor "only" has 16 Earthquake PP, and 32 Taunt PP. This is where Landorus comes in. Landorus is the cleaner, as Gliscor inevitably will get off small amounts of damage on every foe as the stall water user futilely sends each one in. Truly, Landorus only needs 1 move in this matchup, so whatever your team needs for other matchups can be slotted into the other 3 moves. That one move needed is Earth Power. Landorus can't quite get a guaranteed OHKO on most of the Pokemon, but thanks to Gliscor that's not a problem!
Basically, use Earthquake once each on Empoleon, Tentacruel, and Quagsire. 2 or 3 Earthquakes are needed on Azumarill. Alomomola is a BIT more annoying, but like seriously it's not gonna do anything back. Oh, and of course if you get a Toxic on Alomomola or Azumarill, the game's basically over, as Landorus can break them even more easily. If you can get Stealth Rock up, you're in real good shape too for chipping them down. I mean, if Tentacruel Rapid Spins on Gliscor, it's choosing to die to do so, and that's really fine by us to be honest!
To be honest, I would let Alomomola Wish once or twice late-game. Force that stall player to sit through another 20 turns of Gliscor!
Tentacruel and Empoleon are slightly more problematic, but really it's a nonissue. Earthquake gets a 2HKO on Tentacruel, which would otherwise attempt to do some Acid Spray shenanigans. For that reason, never switch Gliscor into Tentacruel to guarantee you win the 1v1. Empoleon's Scald can actually 2HKO Gliscor, but luckily Earthquake can 2HKO Empoleon. Beware of Torrent, which has a pretty good chance of activating after the first Earthquake. Gliscor must be at near full health to survive the Scald.
So basically, Taunt, Toxic, Earthquake, Roost when needed, rinse and repeat.
Noticeably, Gliscor "only" has 16 Earthquake PP, and 32 Taunt PP. This is where Landorus comes in. Landorus is the cleaner, as Gliscor inevitably will get off small amounts of damage on every foe as the stall water user futilely sends each one in. Truly, Landorus only needs 1 move in this matchup, so whatever your team needs for other matchups can be slotted into the other 3 moves. That one move needed is Earth Power. Landorus can't quite get a guaranteed OHKO on most of the Pokemon, but thanks to Gliscor that's not a problem!
Basically, use Earthquake once each on Empoleon, Tentacruel, and Quagsire. 2 or 3 Earthquakes are needed on Azumarill. Alomomola is a BIT more annoying, but like seriously it's not gonna do anything back. Oh, and of course if you get a Toxic on Alomomola or Azumarill, the game's basically over, as Landorus can break them even more easily. If you can get Stealth Rock up, you're in real good shape too for chipping them down. I mean, if Tentacruel Rapid Spins on Gliscor, it's choosing to die to do so, and that's really fine by us to be honest!
To be honest, I would let Alomomola Wish once or twice late-game. Force that stall player to sit through another 20 turns of Gliscor!
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 252 HP / 252+ SpD Empoleon: 328-385 (88.1 - 103.4%) -- 25% chance to OHKO
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 252 HP / 252+ SpD Tentacruel: 289-343 (79.3 - 94.2%) -- guaranteed 2HKO after Black Sludge recovery
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 252 HP / 4 SpD Quagsire: 321-380 (81.4 - 96.4%) -- guaranteed 2HKO after Leftovers recovery
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 252 HP / 40+ SpD Azumarill: 239-282 (59.1 - 69.8%) -- guaranteed 2HKO
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 104 HP / 156 SpD Alomomola: 325-383 (65.3 - 77%) -- guaranteed 2HKO after Leftovers recovery
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 40 HP / 216+ SpD Lanturn: 406-478 (101.2 - 119.2%) -- guaranteed OHKO
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 252 HP / 252+ SpD Tentacruel: 289-343 (79.3 - 94.2%) -- guaranteed 2HKO after Black Sludge recovery
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 252 HP / 4 SpD Quagsire: 321-380 (81.4 - 96.4%) -- guaranteed 2HKO after Leftovers recovery
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 252 HP / 40+ SpD Azumarill: 239-282 (59.1 - 69.8%) -- guaranteed 2HKO
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 104 HP / 156 SpD Alomomola: 325-383 (65.3 - 77%) -- guaranteed 2HKO after Leftovers recovery
252 SpA Life Orb Sheer Force Landorus Earth Power vs. 40 HP / 216+ SpD Lanturn: 406-478 (101.2 - 119.2%) -- guaranteed OHKO
tl;dr Gliscor laughs at the team before Landorus cleans them up. Guaranteed win, pretty much.
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