Daena, Precursor Angel

Flying
When Daena, Precursor Angel enters the battlefield, you may search your library for an Angel or Demon card, reveal it, then shuffle
your library and put that card on top of it.
"When she arrived, the world changed. They fled from Avacyn in fear and flocked to her to receive her Word. Whether that Word is a blessing, or a curse, remains unknown." - Thalia, Guardian of Innistrad