Luminous Shifter

{u}{u}: Look at the top five cards of your library. You may reveal a creature card from among them. If you do, Luminous Shifter's power and toughness become that of the revealed card until end of turn. Put the revealed card and the rest on the bottom of your library in any order.
At long last, I finally perfected the transmutation process. Now the rest of my body will be as strong as my genius mind. Urim Diary: pg. 329