RAVAGE: Look at the Invader Card in the Ravage space (if any): the Invaders Ravage in each land of the shown type only. First, Invaders deal Damage simultaneously to the land and Dahan. Then, any surviving Dahan fight back.
Whenever there are Invaders in the shown lands, Invaders deal Damage: 1 per Explorer, 2 per Town, and 3 per City, all totaled together. Reduce the total Damage by the total of Defend effects (from Spirits and Fear Cards) in that land, then simultaneously:
Invaders Damage the Land: If 2 or more Damage is dealt, add 1 Blight from the Blight Pool to the land, Destroying 1 Presence from each Spirit in that land.
If there was already any amount of Blight in that land, the Blight cascades, Adding 1 Blight from the Blight Pool to 1 adjacent land. (If that land already has Blight, the Blight will cascade again into yet another adjacent land.)
Only 1 Blight is Added to a land from Ravage, no matter how much Damage is dealt.
2 Damage Adds 1 Blight; 9 Damage Adds 1 Blight.
Invaders Fight the Dahan: Every 2 points of Damage Destroys one Dahan. You must Destroy Dahan as efficiently as possible; you cannot disperse Damage among multiple Dahan to avoid killing them.
If a Dahan is dealt 1 Damage, flip it to show that it is Damaged. Any surviving Damaged Dahan will recover at the end of the turn during Time Passes.
After Invader Damage has been fully resolved in a land, any surviving Dahan there fight back. Each Dahan deals 2 Damage to the Invaders. You choose how the Damage from the Dahan is allocated to the Invaders in that land.
The Dahan will fight back even if the Ravaging Invaders deal no Damage (for example, due to Defend Powers), but not if the Ravage Action has been skipped or stopped from happening altogether.
Land Order: If it makes a difference in what order you resolve the lands for a given Invader Card, the players choose.
Spirit Presence does not fight back as Invaders do not directly attack the Spirits.