Each time your Spirit monster returns to your hand, select 1 monster on your opponent's side of the field and return it to its owner's hand. Pay 500 Life Points during each of your Standby Phases. If you do not, this card is destroyed.
So the controller of the card can't get to choose which monster to be returned but the opponent chooses instead. I wonder when will this issue get fixed. I am trying to build a competitive Spirit meta deck but this issue/bug/glitch annoys me sometimes.