Psionic legions of Europa

As many of you know I like to dabble in the expansion of enemies in destiny. Most notably psions and cabal and relating it to Europa. I have concocted up the psionic legions which refer to cabal occupation on Europa. Now the story I'm going with is the cabal set up fueling facilities from old golden age buildings on Europa. However a fallen house is already there so it's a constant power struggle between fallen and cabal. The three legions are what up in the poll are which ones you'd like to see so pick one: Ice reapers: standard ice reapers that were put out there as an offensive move to gain cabal ground. They really consist of most of the cabal fighting force on mars. Mammoth riders: this legion specializes in weapon manufacturing and dealing. They repurpose broken fallen weapons, broken pre-collapse human weapons and systems, and cabal junk that isn't used or can be improved. They don't do much and whine a lot when their tasked with fighting assignments but they know their duties. The bulk of this legion is cabal who are tired of fighting(yes you heard me). They don't fight unless you provoke them or get within an earshot of them. They can be seen riding there signature mammoths, fallen walkers usually on four legs (or Goliath tank jets where limbs aren't) that are used as troop transports or slow scouting vehicles. Snow piercers: a special task force used to obtain information or take out the enemy with deadly force combined with the enemies own weapons. The snow piercers are lead by Valus Kutoc, a very high ranking psion given huge respect by cabal commanders for his guts, calculations, and willingness to run frontline attacks and covert operations head on(literally). His prowess has not been matched.