Wood Elf Renegade

At the beginning of each upkeep, if no spells were cast last turn, transform Wood elf Renegade.
Whenever an opponent casts a spell, you may pay {1}{r}{g}. If you do, look at the top ten cards of your library. You may reveal a creature card from among them and put it into your hand. Separate the rest randomly into two piles and put one on top of your library and one on the bottom of your library, both in a random order.