Weasley, Swiftie Mother

+2: Add X mana in any combination of {R} and/or {G} to your mana pool, where X is the number of creatures you control.
+1: Put a 1/1 red and green child creature token with haste onto the battlefield.
-10: Exile the top seven cards of your library. You may put any number of creature and/or land cards from among them onto the battlefield.