An old set but still a decent one,
Stealth Rocks Toxic Gliscor
Gliscor @ Toxic Orb
Jolly Nature
Ability: Poison Heal
EVs: 244 HP / 240 SpD / 24 Spe
- Stealth Rock
- Roost
- Earthquake
- Toxic
24 Speed creeps the standard Zapdos (and standard fast-ish Fini) allowing Gliscor to buy some time against HP Ice instead of relying on winning speed ties (although Pressure makes this not a great plan in the first place), rest in HP/SpDef to let Gliscor sit in front of Tapu Fini and avoid being 2HKO'd by Scald.
Gliscor has access to Stealth Rock and Toxic, while having reliable recovery and being mostly-immune to hazards itself; these factors make it a durable Stealth Rock setter that can really annoy some common Defoggers like Landorus-T, Zapdos, Mandibuzz, Rotom-H/W, and Tapu Fini.
Also, common answers to SD Gliscor like Slowbro and Hippowdon
really hate being hit by Toxic, which limits their ability to handle Gliscor's teammates.