cofagrigus
(Untested moveset)
nature:impish @item expers belt/shed shell /leftovers
ability:mummy
ev spread:252 hp/ 124 def/128 spD
move 1:shadow ball
move 2:psychic/psycho shock
move 3:calm mind/ protect
move 4:will-o-wisp/trickroom
[comments]: shadow ball is in the first slot as it does the most damage thanks to STAB. pyschic is in the next slot to target threats like double status amoonguss before it can get to you. psychic can be replaced to tackle pokemon like jellincent with a low defence. calm mind is in there to increase youre attac power, and special defence increasing your chances of putting a dent in the opponenets pokemon, whereas protect is to buy you a free turn. will-o-wisp is the to reduce the threat of high physical damage beyond what it was from his excellent defense, but trickroom can go there instead to disorientate youre opponenent and make them rethink there strategy, giving you an edge in the battle for the longterm.