Black Sludge: An item to be held by a Pokémon. It gradually restores HP to Poison-type Pokémon. It damages any other type.

PokémonPokémon %Item %Usage %Usage Δ
Toxapex 10.86344%77.309%8.39842% 0.54574%
Amoonguss 1.76261%71.516%1.26055% 0.22952%
Tentacruel 0.40477%59.333%0.24016% -0.0155%
Roserade 0.25845%71.944%0.18594% 0.13894%
Salazzle 0.22768%55.017%0.12526% -0.10188%
Muk (Alola Form) 1.37575%5.562%0.07652% -0.05358%
Gengar 0.92786%7.613%0.07064% -0.04938%
Crobat 0.21079%15.894%0.0335% -0.00342%
Toxicroak 0.104%31.407%0.03266% 0.00864%
Nidoqueen 0.10171%27.521%0.02799% -0.00866%
Drapion 0.04758%50.263%0.02392% 0.00959%
Nihilego 0.43365%5.083%0.02204% 0.01153%
Weezing 0.02679%75.732%0.02029% 0.00346%
Vileplume 0.01897%83.865%0.01591% 0.00442%
Dragalge 0.09068%17.126%0.01553% 0.00633%
Venomoth 0.09325%10.578%0.00986% 0.0036%
Scolipede 0.64303%1.309%0.00842% -0.00886%
Ariados 0.01059%64.016%0.00678% 0.00678%
Qwilfish 0.08232%4.423%0.00364% 0.00133%
Arbok 0.02065%8.467%0.00175% -0.00088%