The Lost Caverns of Ixalan

Confounding Riddle | Instant | | Choose one — • Look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard. • Counter target spell unless its controller pays {4}. | A. M. Sartor

Hurl into History | Instant | | 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.) | Eli Minaya