Since Typhlosion-Hisui is now NU, here is a set it can use there:
Gen 9 NU Status Spreader
Typhlosion-Hisui @ Heavy-Duty Boots
Ability: Frisk
Tera Type: Fighting
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Eruption
- Focus Blast
- Lava Plume
- Infernal Parade
A status spreader set Hisuian Typhlosion uses in Gen 9 NU. The idea of this set is that it doesn't require Hisuian Typhlosion to be at full HP to put in work with spamming powerful Eruptions. This set uses the 30% burn chance on two of Hisuian Typhlosion's STAB moves to spread burns, which is the main way this set allows Hisuian Typhlosion to put in work. Eruption is used for a powerful Fire STAB that should be used when it would be stronger than Lava Plume, in other words, it is used when Typhlosion-Hisui isn't low on HP. Focus Blast gives Hisuian Typhlosion a coverage move that deals super effective damage to Dark-types such as Krookodile, Incineroar, and Umbreon. Focus Blast also deals super effective damage to Rock-types such as Rhyperior, Iron Thorns, and Lycanroc-Dusk. Lava Plume and Infernal Parade are used for the STABs that allows Typhlosion-Hisui to spread burns, with Infernal Parade having double power when used on opposing Pokemon that are statused. Heavy-Duty Boots is used to pevent Hisuian Typhlosion from being chipped by hazards. Frisk is used to scout for items opposing Pokemon have so you can get an idea of what sets opposing Pokemon are using on a team. Tera Fighting allows Hisuian Typhlosion to resist Dark- and Rock-types and have another STAB move in Focus Blast.