Rin, Stardust Gambler

This card is all colors. At the start of the game,
create a token called "Spellbook".
When this enters the battlefield, choose a number
then reveal the top card of your library. If the
number you chose is Less than the CNC of the
revealed card, draw that card. Equal to the CNC
of the revealed card, Place that card onto the
battlefield and repeat this effect. More than the
CNC of the revealed card: Exile the top X+1 cards
of your library, where X is what you paid to cast
this card. Then destroy t