If a piece is added or moved to a land mid-Ravage (e.g., by a Blight Card that flips during the Ravage), does that piece participate in the Ravage?

If a piece is added or moved to a land mid-Ravage (e.g., by a Blight Card that flips during the Ravage), does that piece participate in the Ravage?

Yes, generally speaking. Dahan counterattack if added or moved to the land by a flipping Blight Card (or anything it triggers), and any Invaders added or moved to the land by that Blight Card (or anything it triggers) can be dealt Damage by the counterattack. (The Invaders arrive too late to deal any Damage – Blight has already been added, after all.)
Even more detailed/unusual corner-cases:
If a "do not participate in Ravage" effect is in the land, check if the new pieces are included in it the moment the Ravage resumes (i.e., the first point in the Ravage that they're in that land). In particular:
  • If the Incarna of Wandering Voice Keens Delrium is nearby, newly-added/moved Dahan do not participate in the Ravage if any Strife is remaining (unlikely, unless an Invader had more than 1 Strife or "Exhale Confusion and Delirium" was used to prevent the Invaders with Strife from losing that Strife by participating in the Ravage); if all of the Strife is gone, the new Dahan will participate and counterattack (even if the original Dahan do not).
  • If the Incarna of the Lair Aspect is in the land, newly-arrived Dahan and Explorers don't participate in the Ravage unless they put the Incarna over its limit of non-participating pieces. For example, if there were already 2 Dahan in the land (both not participating in the Ravage) and 2 more arrive mid-Ravage due to a Blight Card, 1 of the new Dahan doesn't participate in Ravage while the other new Dahan does, since the Incarna prevents 3 total Dahan from participating.