To complete the list for the first one, I can Barkskin myself every 1 min (20% mitigation) and I can Ironbark Toban every 1 min (also 20% mitigation). Is that everyone covered in personal CD's then?
Still not sure what to go with though. Using Tranq on the second Empowered leaves us with nothing in the last phase
Probably stack whatever we have left like: Avenging Wrath, Nature's Vigil and Tree of Life. 'Cause those won't be needed if people actually use the CD's you mentioned so far. Should do the trick honestly. For the second one that is.