Ordinar, Planar Willow

+1: Put a 0/1 green plant creature token onto the battlefield under your control, then gain 1 life for each creature you control.
-X: add x mana in any combination of colors to your mana pool. This mana cannot be spent on artifacts.
-10: Exile the top x cards of your library, where X is the number of lands you control. Then put any number of permanents exiled this way into play.