Hidden Necropolis
Land — Cave
This land enters tapped.
: Add 
.
, , 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.)
Illustrated by
The Lost Caverns of Ixalan#275CommonEnglish