Invaders slowly but inexorably Blight the land. A certain amount of Blight is normal in nature — such as damage from a forest fire — but too much will overwhelm the Island.

When you add Blight to the Island during play, take it from the Blight Pool. If you remove Blight from the Island, return it to the Blight Pool. If you run out of Blight in the Blight Pool, you lose.

After Setup, whenever you add Blight to a land (including when Blight cascades), two bad things happen:

Destroy Presence: In that land, Destroy one Presence from each Spirit with Presence there. Destroyed Presence is placed next to the Island, not returned to the Spirit Panels.

Cascade: If the land already had any Blight, also add one additional Blight to any one adjacent land. (If that adjacent land also has Blight, it will then cascade again from there, etc.)