Exorcist Mage, Ren Ren

:When this unit is rode upon, 1, look at two cards from the top of your deck, choose one from among them, bind it, and put the rest into your hand. :[ 1 & bind the top card of your deck], and this unit gets +5000 until end of turn for each grade of the card bound for this cost. If a grade 0 was bound for this cost, draw a card.