Ruins of the Nis Valley

Ruins of the Nis Valley enters the battlefield
tapped.
{t}: Add {u} or {g}
—
Vast are the stones which sleep beneath coverlets of
dank moss, and mighty were the walls from which
they fell. For all time did their builders erect them,
and in sooth they yet serve nobly, for beneath them
the grey toad makes his habitation.
Memory—H.P.Lovecraft