Rks System
Changes this Pokémon's type to match its held Memory.
Full effect
Changes this Pokémon's type to match its held Memory. This ability cannot be copied, replaced, or nullified. This ability only takes effect for Silvally.
In game description
Changes the Pokémon’s type to match the memory disc it holds.
Pokemon with Rks System
Using Rks System in Cobblemon
Abilities are passive and always active, so Rks System 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.