Deals more damage to Pokémon of the same gender.
This Pokémon inflicts 1.25× as much regular damage against Pokémon of the same gender and 0.75× as much regular damage against Pokémon of the opposite gender.
If either Pokémon is genderless, damage is unaffected.
Pokémon with Rivalry as a standard ability (1)
Phoenixdex Pokémon (1)