Muk

Stench
Decreases wild encounter rate (no effect in battles).
Sticky Hold
This Pokémon's item cannot be removed. Increases the chance of encountering Pokémon while fishing.
Type Tier
Poison UU
Level 50 Statistics (see level 5, 50, 100)
Min- Min Max Max+
HP
105
- 180 212 -
Atk
105
112 125 157 172
Def
75
85 95 127 139
SpA
65
76 85 117 128
SpD
100
108 120 152 167
Spe
50
63 70 102 112
Name Item Ability Nature

Curse

Leftovers Sticky Hold Careful
Moveset EVs
~ Curse
~ Sludge Bomb
~ Hidden Power Ground
~ Toxic
252 HP / 104 Atk / 152 SpD

Thanks to Sticky Hold and a Toxic immunity, Muk can come in on Deoxys-D, and it threatens everything that relies on Recover for health with its own Toxic. Cursing up shouldn't be too hard with Muk's great Special Defense. Hit Metagross and Psychic Jirachi (the latter is uncommon) on the switch with Hidden Power Ground.

Other Options

Body Slam can paralyze the opponent, and paralysis is always good. Imprison is very unorthodox and works in very rare circumstances; stay away from it until you've tried out the standard Muk. Memento can make your opponent's Pokemon harmless, so you can set up a Belly Drum user next turn. Explosion is more recommended for suicide, though. Thunder and Fire Blast are alternative options for hurting Skarmory and some other counters. Thunderbolt and Flamethrower are as well, but its generally better to take advantage of Thunder and Fire Blast's higher Base Power (as well as Thunder's higher paralysis chance). Rest, with or without Sleep Talk, makes your Muk live longer. It's really an easy switch for counters though.