For one, returning the monster to the hand can be a good thing. Cards like Reborn Tengu or Snowman Eater benefit from it. Second, Divine Wind of Mist Valley and Mist Valley Thunderbird work with it. Third, oh no, you have multiple things you can do with your Tuner, the horror! Just wait until you see Mist Valley Soldier, who is more useful as a monster than a Tuner.