Moonarc Sky Sanctuary

Moonarc Sky Sanctuary enters the battlefield
tapped unless you control a Moonfolk creature.
When Moonarc Sky Sanctuary enters the battlefield, return a land you control to its
owner's hand. Scry 1. (Look at the top card of
your library. You may put that card on the bottom of
your library.)
{t}: Add {u} to your mana pool.