Breloom

[SET]
name: SubSeed
move 1: Spore
move 2: Leech Seed
move 3: Substitute
move 4: Focus Punch
item: Toxic Orb
nature: Impish
ability: Poison Heal
evs: 236 HP / 252 Def / 20 Spe

[SET]
name: All-Out Attacker
move 1: Spore
move 2: Facade / Stone Edge
move 3: Seed Bomb
move 4: Superpower / Sky Uppercut / Mach Punch
item: Toxic Orb / Life Orb
nature: Jolly
ability: Poison Heal
evs: 4 HP / 252 Atk / 252 Spe

[SET]
name: All-Out Attacker
move 1: Spore
move 2: Facade / Stone Edge
move 3: Seed Bomb
move 4: Superpower / Sky Uppercut / Mach Punch
item: Toxic Orb / Life Orb
nature: Jolly
ability: Poison Heal
evs: 4 HP / 252 Atk / 252 Spe

[OTHER OPTIONS]
- Swords Dance can be kinda scary, but it’s too slow and Mach Punch isn’t strong enough
- Dual Status can be used with Spore and Stun Spore, but setting up a substitute on the switch is more effective than paralyzing something
- Choice Scarf allows it to outspeed many top threats and Sleep them before they can hit Breloom, but Choiced Spore / Superpower is questionable at best