Deck Knight
Blast Off At The Speed Of Light! That's Right!
If I may sugest a slight modification to the SubPuncher set:
Name: SubPuncher
move 1: Substitute
move 2: Focus Punch
move 3: Payback
move 4: Mach Punch
ability: Iron Fist (if available) / Guts
item: Leftovers
evs: 216 HP / 252 Atk / 40 SpD
nature: Adamant / Brave
As nice as Encourage is, the Subpuncher set's best bet is to exploit all of Substitute's benefits. In this case Rohpushin derives the greatest possible advantages from being slower than its opponents. Rohpushin can actually be made slower than Dusknoir with Brave (or some Speed IV drops), so if it Subs as Dusknoir comes in it can get the full damage from Payback. Guts helps it against Burn from Will-o-Wisp, but Iron Fist boosts the power of its Focus Punch and Mach Punch considerably. Mach Punch itself is brilliant for the set, allowing it to maul opponents without their own priority without putting its Substitute at risk.
To be honest, I'm not sure if the SpD EVs help it survive any special attacks in particular, but in any case it probably benefits more from having the Special Defense there then having a Substitute with 2 more HP. Phsyical defense might even be a better investment, need calcs. Together only Heracross and Toxicroak resist Fighting/Dark, and neither of them takes a 135 BP Resistance adjusted Focus Punch off 140 Attack that well (Heracross takes 71.4-84.1% from Iron Fist Focus Punch, enough that Mach Punch can potentially finish it off 25-29.9%, and always after SR).
Name: SubPuncher
move 1: Substitute
move 2: Focus Punch
move 3: Payback
move 4: Mach Punch
ability: Iron Fist (if available) / Guts
item: Leftovers
evs: 216 HP / 252 Atk / 40 SpD
nature: Adamant / Brave
As nice as Encourage is, the Subpuncher set's best bet is to exploit all of Substitute's benefits. In this case Rohpushin derives the greatest possible advantages from being slower than its opponents. Rohpushin can actually be made slower than Dusknoir with Brave (or some Speed IV drops), so if it Subs as Dusknoir comes in it can get the full damage from Payback. Guts helps it against Burn from Will-o-Wisp, but Iron Fist boosts the power of its Focus Punch and Mach Punch considerably. Mach Punch itself is brilliant for the set, allowing it to maul opponents without their own priority without putting its Substitute at risk.
To be honest, I'm not sure if the SpD EVs help it survive any special attacks in particular, but in any case it probably benefits more from having the Special Defense there then having a Substitute with 2 more HP. Phsyical defense might even be a better investment, need calcs. Together only Heracross and Toxicroak resist Fighting/Dark, and neither of them takes a 135 BP Resistance adjusted Focus Punch off 140 Attack that well (Heracross takes 71.4-84.1% from Iron Fist Focus Punch, enough that Mach Punch can potentially finish it off 25-29.9%, and always after SR).