Forretress – Bug/Steel @Leftovers
Ability – Sturdy
EVs – 210Hp/100Attack/100Defense/100SDefense
Nature – Impish (+Defense/-SAttack)
Stealth Rock/Spikes
Rock Slide
Explosion
Rapid Spin
Spinner and Spiker, mediocre damage with rockslide, and once he gets to low, explosion...