Featuring: the Mountain Goats was a uniquely collaborative Secret Lair shaped almost entirely by John Darnielle, the band’s frontman and longtime Magic fan. Darnielle set the drop on Lorwyn, selected the artists, guided the artwork, and wrote an original prophecy that unfolded across the flavor text. The ten Mountains also featured the first extended art treatment ever used on basic lands, making this an especially distinctive release for both Magic and Mountain Goats fans.
Given the rarity and limited information on some bonus cards, this may not be a complete list of all potential bonus cards available in this Secret Lair.
Mountain Goat
Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)