Toxic Chain
May cause bad poisoning when the Pokémon hits an opponent with a move.
Full effect
The power of the Pokémon's toxic chain may badly poison any target the Pokémon hits with a move.
In game description
The power of the Pokémon's toxic chain may badly poison any target the Pokémon hits with a move
Pokemon with Toxic Chain
Using Toxic Chain in Cobblemon
Abilities are passive and always active, so Toxic Chain costs you nothing to run. If it is marked hidden on a species above, expect it to be harder to obtain: servers differ in whether hidden abilities come from breeding, an Ability Patch, or events.
See the Pokedex for which abilities each species can have, and IVs, EVs and breeding for how to actually pass one down.