Here's a theory set:
Blaziken @ Leftovers
252 Atk/176 Spe/80 SpAtk
Naive / Speed Boost
Substitute
Hi Jump Kick
Shadow Claw
Fire Blast/Blaze Kick
Fire Blast deserves a mention on a non-boosting set because a lot of physical walls are hit harder by fire blast, and he carries shadow claw to wear down jellicent anyway, but with these EVs he hits hard enough to 2hko Lati@s with Shadow Claw, and he nets a recoil-free 2hko on Gliscor. Often, teams rely on Blaziken wearing itself down with Flare Blitz+LO recoil to keep them from being swept completely, or offensively beating it with Scarf Lati@s, but +Spe Ken beats 110s at +2 Speed, which makes them ineffective in checking him if he gets those 2 free turns (1 on the switch, 1 as they break the substitute). EVs put him at 528 Speed after +2.
Blaziken @ Leftovers
252 Atk/176 Spe/80 SpAtk
Naive / Speed Boost
Substitute
Hi Jump Kick
Shadow Claw
Fire Blast/Blaze Kick
Fire Blast deserves a mention on a non-boosting set because a lot of physical walls are hit harder by fire blast, and he carries shadow claw to wear down jellicent anyway, but with these EVs he hits hard enough to 2hko Lati@s with Shadow Claw, and he nets a recoil-free 2hko on Gliscor. Often, teams rely on Blaziken wearing itself down with Flare Blitz+LO recoil to keep them from being swept completely, or offensively beating it with Scarf Lati@s, but +Spe Ken beats 110s at +2 Speed, which makes them ineffective in checking him if he gets those 2 free turns (1 on the switch, 1 as they break the substitute). EVs put him at 528 Speed after +2.