I've been using this for a while now with good results. Decided to share it here as it deserves some love.
(Also damn bullet points not adding up properly whatever I do...)
Update: Made the set mixed, main stuff remains similar. Reworked pieces of the text, think I removed all inconsitencies with the previous version, just ditch most of the damage calcs...
Infernape
[SET]
name: Slack Off
move 1: Slack Off
move 2: Close Combat
move 3: Fire Blast
move 4: Grass Knot / Hidden Power Ice
item: Life Orb
nature: Naive
evs: 64 Atk / 252 SAtk / 192 Spe
Why this set deserves to be on-site:
Damage calc's:
Jolly Infernape Close Combat
vs. Bold Blissey : 111.2% - 131.1% OHKO
Jolly Infernape Flare Blitz
vs. Careful Skarmory : 97% - 115% OHKO with rocks
Jolly Infernape Flare Blitz
vs. Jolly Gliscor : 50.3% - 59.6% 2HKO with rocks (considering leftovers)
Jolly Infernape Flare Blitz
vs. Relaxed Forretress : 150.3% - 177.4% OHKO...
Jolly Infernape Flare Blitz
vs. Bold Rotom-H : 52.6% - 62.5% 2HKO with rocks (considering leftovers)
Jolly Infernape Flare Blitz
vs. Bold Jirachi : 79.2% - 94.1% needs some residual damage
Jolly Infernape Close Combat
vs. Relaxed Swampert : 43.4% - 51.1% 2HKO wit residual damage
Jolly Infernape Close Combat
vs. Bold Vaporeon : 47.8% - 56.5% Chance to 2HKO with Rocks
Jolly Infernape Stone Edge
vs. Impish Gyarados : 51.9% - 61.1% (resttalk). 2HKO after rocks
Jolly Infernape Stone Edge
vs. Calm Tentacruel : 40.1% - 47.3% (Thunderpunch 2hko's)
Jolly Infernape Stone Edge
vs. Rash Dragonite : 78.6% - 92.9% OHKO with rocks
Jolly Infernape Stone Edge
vs. Timid Starmie : 53.4% - 63% 2HKO, although starmie outspeeds
Jolly Infernape Close Combat
vs. Impish Hippowdon : 36% - 42.4% (physically defensive)
Jolly Infernape Close Combat
vs. Bold Suicune : 35.6% - 41.8%
Additional Comments:
(Also damn bullet points not adding up properly whatever I do...)
Update: Made the set mixed, main stuff remains similar. Reworked pieces of the text, think I removed all inconsitencies with the previous version, just ditch most of the damage calcs...

Infernape
[SET]
name: Slack Off
move 1: Slack Off
move 2: Close Combat
move 3: Fire Blast
move 4: Grass Knot / Hidden Power Ice
item: Life Orb
nature: Naive
evs: 64 Atk / 252 SAtk / 192 Spe
Why this set deserves to be on-site:
- Excellent stallbreaker, being able to break appart many common walls, whilst stall often relies on residual damage to wear Infernape down.
- Can serve as a lategame cleaner.
- Causes many switches, which allows Infernape to use Slack Off to recover Life Orb and entry hazard damage.
- Greatly apreciates Stealth Rock support to grab some important ko's.
- Functions similar to LO Starmie, except this isn't walled by Blissey, nor suffers from a horrid psychic typing.
Jolly Infernape Close Combat
vs. Bold Blissey : 111.2% - 131.1% OHKO
Jolly Infernape Flare Blitz
vs. Careful Skarmory : 97% - 115% OHKO with rocks
Jolly Infernape Flare Blitz
vs. Jolly Gliscor : 50.3% - 59.6% 2HKO with rocks (considering leftovers)
Jolly Infernape Flare Blitz
vs. Relaxed Forretress : 150.3% - 177.4% OHKO...
Jolly Infernape Flare Blitz
vs. Bold Rotom-H : 52.6% - 62.5% 2HKO with rocks (considering leftovers)
Jolly Infernape Flare Blitz
vs. Bold Jirachi : 79.2% - 94.1% needs some residual damage
Jolly Infernape Close Combat
vs. Relaxed Swampert : 43.4% - 51.1% 2HKO wit residual damage
Jolly Infernape Close Combat
vs. Bold Vaporeon : 47.8% - 56.5% Chance to 2HKO with Rocks
Jolly Infernape Stone Edge
vs. Impish Gyarados : 51.9% - 61.1% (resttalk). 2HKO after rocks
Jolly Infernape Stone Edge
vs. Calm Tentacruel : 40.1% - 47.3% (Thunderpunch 2hko's)
Jolly Infernape Stone Edge
vs. Rash Dragonite : 78.6% - 92.9% OHKO with rocks
Jolly Infernape Stone Edge
vs. Timid Starmie : 53.4% - 63% 2HKO, although starmie outspeeds
Jolly Infernape Close Combat
vs. Impish Hippowdon : 36% - 42.4% (physically defensive)
Jolly Infernape Close Combat
vs. Bold Suicune : 35.6% - 41.8%
Additional Comments:
- Hidden Power Electric can be used to hit Tentacruel and Gyarados harder.
- Pokemon that can set up Stealth Rock reliably form great partners for Infernape, netting several important KO's.
- Pokemon that can effectively neuter several bulky watersmake Infernape's job a whole lot easier. Good examples are Celebi and Shaymin with their strong grass type attacks who are also capable of taking water and ground attacks directed towards Infernape. LO Starmie also does this job decently aswell as providing excellent offensive synergy.
- Infernape is stopped in its tracks by defensive suicune as well as Vaporeon and Gyarados (when not using HP Electric). Starmie can also come in with ease and outspeed, but will still be hit hard on the switch. Tentacruel can also stop infernape in its tracks, but can sustain major damage doing so.