Mars City Shadowrun
GreenWar splinter group. Focussed on the hunt for primal magical relics. Fund their “work” through the sale of lesser artifacts/foci/reagents/etc.
Possibly attempting to bring Horrors through ahead of schedule to “cleanse the world” and remove the taint of metahumanity.
Some members follow (or worship?) something they call the Vast Green- a cult dedicated to freeing the dragon Sirrurg from his magical prison.