Penemue, Angel of Legend

Flying
When Penemue, Angle of Legend enters the battlefield, if you control another angel you may look at the top four cards of your library, you may my put one into your hand, put the rest on the bottom of your library in any order, if you do, select a card you did not draw this turn in your hand and put it into your graveyard, if you do exile another card from your graveyard, you may cast that card without paying it's mana cost as long as you control another angel.