Well I'd like to nominate Calm Mind Sneasel... Nah but I would like nominate something a little different. In particular a set I've been using to quite a bit of success. Belly Drum Magmortar, it works wonders at taking out Mortar's usual checks such as Licky , Miltank and Grumpig.
Magmortar
252 Atk , 252 Spd , 4 Def
Jolly / Vitial Spirit
Expert Belt / Leftovers
Belly Drum
Fire Punch / Flame Charge
Earthquake
Cross Chop
Some physical walls still give it a bit of trouble, If electing for Flame Charge Missy can quite easily take it down. The general idea is to Belly Drum on something Mortar forces out as the opponent switches in their counter and proceed to sweep with Cross Chop taking out the specially defensive Normal types , Earthquake Grumpig and co and Fire Punch / Flame Charge for anything that takes Super Effective damage. Even at +6 Flame Charge is rather weak but the +1 speed is invaluable if going for a slightly premature sweep.
Magmortar
252 Atk , 252 Spd , 4 Def
Jolly / Vitial Spirit
Expert Belt / Leftovers
Belly Drum
Fire Punch / Flame Charge
Earthquake
Cross Chop
Some physical walls still give it a bit of trouble, If electing for Flame Charge Missy can quite easily take it down. The general idea is to Belly Drum on something Mortar forces out as the opponent switches in their counter and proceed to sweep with Cross Chop taking out the specially defensive Normal types , Earthquake Grumpig and co and Fire Punch / Flame Charge for anything that takes Super Effective damage. Even at +6 Flame Charge is rather weak but the +1 speed is invaluable if going for a slightly premature sweep.


























