Coming of Dawn

At the beginning of each upkeep, put a day
counter on Coming of Dawn. If you have 5 day counters on Coming of Dawn, remove all
counters from it and search your library for a
creature card, then shuffle your library. Put that creature onto the battlefield. It gains haste.
"Look to my coming on the first light of the fifth day,
at dawn look to the east."
--Gandalf