Icalidar's Awakening

Emerge {5}{g}{g} (You may cast this spell by sacrificing a creature and paying the emerge cost
reduced by that creature's mana value.)
Look at the top six cards of your library. If
Icalidar's Awakening's emerge cost was paid, you
may put a creature card from among them onto
the battlefield. Otherwise, reveal a creature card
from among them and put it into your hand. Put
the rest on the bottom of your library in any
order.