The Demon's Debt

Evil behind a doorway barred; three were chosen to serve as guard

Taken from the surrounding wood; their souls entombed in trees they stood

When one shatters birch, fir, or oak; banshee's vengeance visits mortal folk

No hero from the children of light; prevails against the blood moonlight

Summon outsiders into the maze; to stand against the ancient ways

Can the Warders work with former allies and enemies to defeat the banshee and prevent the rise of a new dark-elven overlord?