Playable at any Under-deeps site. +2 to all rolls required for bearer's company to move to an adjacent site in the Under-deeps. Tap Dwarven Light-stone: to modify by -2 the prowess of one Orc or Troll attack or to modify by -2 the prowess of one attack for which "weapons do not modify the target's prowess" (e.g., Trap, Lava Flow, etc.).
"'...as once shone in Khazad-dum; and when we wished we would drive away the night..."
-LotRIII