Hard Stone EffectBoosts the power of the holder’s Rock-type moves by 20%. Damage roll calculator Items Singles stats Shared samples Pokémon related to Hard Stone AerodactylAerodactyl (Mega Aerodactyl)AggronArcanine (Hisuian Form)BastiodonLycanrocRampardosTaurosTyranitarTyranitar (Mega Tyranitar)