Set: Choice Band Escavalier

Escavalier @ Choice Band 

Trait: Swarm 

EVs: 248 HP / 252 Atk / 8 SDef 

Adamant Nature (+Atk, -SAtk) 

- Megahorn 

- Iron Head 

- Return 

- Pursuit

The power behind this set is staggering. Escavalier's gigantic base 135 Attack puts it on the level of OU's top physical threats, even beating its higher-tiered counterpart: Scizor. Although Escavalier suffers from an incredibly low base 20 Speed stat, its defensive stats are high enough for it to successfully pull of the role of an extremely hard-hitting bulky attacker.

Escavalier's excellent typing allows it to switch in often to spam high-powered attacks. Since Steel-types are much less common in UU, HP Fire tends to be a rare move. This means Escavalier receives free switch-ins on several Grass-types, including most Roserade and Celebi sets. 

Megahorn is the set's hardest hitting move. Even physically defensive behemoths like Donphan, Rhyperior and Slowbro are easily 2HKOed (with a clean OHKO in the case of the latter). Iron Head is a reliable secondary STAB for hitting Bug resists for extra damage. Return has a nice max base power of 102, which dishes out plenty of damage with this set. Pursuit is excellent for trapping Ghosts like Mismagius; thanks to Escavalier's bulk, the Nasty Plot set fails to 2HKO with HP Fighting at +2.

Escavalier's movepool is poor in terms of type coverage, but its power is enough to wear down nearly any opponent, even Pokémon that resist its attacks. Entry hazards are really helpful for making it easier to take down "counters." As far as teammates go, Scarf Heracross is an excellent partner to this set. It can form a double Bug offensive core with Escavalier, spamming Megahorn and later Close Combat after Ghost-types have been trapped with Pursuit.