A slow tank
ability:either one is good
EVs:252 health,252 atk,4 special def
seed bomb/wood hammer-your basic strong grass move
hammer arm-your basic strong fighting move
gyro ball-since he's slow and hammer arm makes him slower this will be great!
belly drum-to make him an offensive/defensive tank
or you can give him:
EVs:252 health,252 def,4 special def
seed bomb/wood hammer/hammer arm/earthquacke-a basic strong move,don't use stone edge (it's accurecy is to low)
leach seed/synthesis/pain split/giga drain/swagger-to gain health/or if swagger,to confuse
spikey shield/substitute/a health gaining move-to deflect/to gain health while the other Pokemon is confused
belly drum-too make him invincable
notes:substitute and pain split work well together.There's hardly any point of using swagger and spiky shield.depending on if you use seed bomb or wood hammer a good item would be miracle seed just to make him even stronger.left overs is a good item because if you use leach seed and this item he gains 1/8 of his health every turn so in 4 turns of using spiky shield he'll have full health.The reason you shouldn't use bulk up instead of belly drum is because bulk up takes to long and bulk up does the defence,your opponent could use special moves.