Spine Celestial, Jophiel

:When this unit is rode upon, choose a card from your damage zone, and you may swap a unit card from your hand with it. :When this unit is placed on from hand, [ 1 & bind this unit], and put the top card of your deck into your damage zone. At the end of that turn, you may put this card into your drop. If you do, choose a card from your damage zone, and put it into your hand.