Immune to player card effects.

Forced: After Abandoned Camp leaves play, each player must deal 2 damage to each exhausted character he controls.

Shadow: If this attack is undefended, discard all attachment cards players control.

While Glade of the Spawn is the active location, it gains:"Forced: After a Spider enemy enters play, each player must choose and exhaust 1 character he controls."

...black even for that forest, like a patch of midnight that had never been cleared away. –The Hobbit