I've made this team and it has gotten me to 1500 on ladder then dropped to 1418 on SU server with my alt account BerserkVirus. This team has won about 80% of its matches.
Big Reaper (Dusknoir) (M) @ Life Orb
Ability: Pressure
EVs: 252 HP/252 Atk/4 Def
Adamant nature (+Atk, -SAtk)
- Ice Punch
-...