 Just like moves, some items hinder the user to compensate their power; for instance, the Life Orb boosts the damage of the holder's attacks, but hurts it after each successful attack.Others items solely harm the user except in rare situations, such as the Toxic Orb, which badly poisons it.Pokémon "X" and "Y" introduced Mega Stones used to Mega Evolve members of the stone's species, and "Sun" and "Moon" introduced Z-Crystals, which give the holder access to Z-Moves.