Hurl into History LCI/59

Set: The Lost Caverns of Ixalan
Collector Code: LCI/59
Finish: Regular

Name: Hurl into History
Type: Instant
Oracle text: Counter target artifact or creature spell. Discover X, where X is that spell's mana value. (Exile cards from the top of your library until you exile a nonland card with that mana value 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.)