Get rid of the Petrahulks of Wrath that are destroying the trees.
Step 1. Kill the Wrathful PetrahulkA Petrahulk roaming about The Crash Site.s to stop the trees being destroyed.(x10)
Step 2. Talk to MagniAn Elim at Red Lava Cliff in Morheim. He became an Agrint but was cured by a bolt of lightning..