Hidden Volcano

Hidden Volcano enters the battlefield tapped.
(T): Add (R).
(4) (R), (T), Sacrifice Hidden Volcano: Discover 4. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

#0277