Windbrisk Heights - From the Vault: Realms - 15

Land

Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)
This land enters tapped.
{T}: Add {W}.
{W}, {T}: You may play the exiled card without paying its mana cost if you attacked with three or more creatures this turn.

Mythic · From the Vault: Realms · #15 (V12)

Illustrated by Omar Rayyan