Anger Point
Raises Attack to the maximum of six stages upon receiving a critical hit.
Full effect
Whenever this Pokémon receives a critical hit, its Attack rises to the maximum of 6 stages. This ability will still take effect if the critical hit is received by a Substitute.
In game description
The Pokémon is angered when it takes a critical hit, and that maxes its Attack stat.
Pokemon with Anger Point
Using Anger Point in Cobblemon
Abilities are passive and always active, so Anger Point 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.