Kruphix's Guiding Starfall

Search your library for a basic land card and
put that card onto the battlefield tapped.
Then shuffle your library.
Prayer (A creature you control can help cast this
spell. Tap it to add colored mana equal to that in its
mana cost. A creature that mentions the Kruphix
in its name or a Cleric add an additional {1}.)
If Prayer is used to cast the spell, untap the land
it put into play.