Here's an idea for putting Marshadow together:
Marshadow @ Marshadium Z / Life Orb
Ability: Technician
EVs: 20 Atk / 216 Def / 136 SpD / 136 Spe [the IV's are split this way to even out the Atk/Spe (320 each) and both defenses (250 each)]
Adamant Nature
- Brick Break / Close Combat / Drain...