Hidden Cataract - The Lost Caverns of Ixalan - 273

Land — Cave

This land enters tapped.
{T}: Add {U}.
{4}{U}, {T}, Sacrifice this land: 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.)

Common · The Lost Caverns of Ixalan · #273 (LCI)

Illustrated by Josu Solano