Tough Claws
Strengthens moves that make contact to 1.33× their power.
In game description
Powers up moves that make direct contact.
Pokemon with Tough Claws
Using Tough Claws in Cobblemon
Abilities are passive and always active, so Tough Claws 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.