Spirit monsters (スピリットモンスター Supiritto monsutā) are Effect Monsters with the ability "Spirit". With the exception of the Special Summon Monster "Yamato-no-Kami" and the "Shinobird" Ritual Monsters, they cannot be Special Summoned and each have an effect that returns them to their owner's hand during the End Phase of the turn they are Normal Summoned or flipped face-up (or the turn they are Special Summoned in case of Spirit monsters that must be Special Summoned).