After playing around with a few eccentric combinations of Exotic Class Items mainly on Titan. There should be a few other outside class spirits for Titans, Warlocks, and Hunters. Spirit of Bakris Spirit of Chorus Spirit of the Firewalker Spirit of Fealty Spirit of Radius Spirit of Antaeus Six total two of each class, and ones that could be powerful yet fun to experiment with, especially since class specific weapons (like the swords and glaives) can be used on the other classes. Personally I'd have a blast using Spirit of Bakris with Spirit of the Horn or Abreyant, maybe even Hoarfrost or Inmost light. I know some of these sound far fetch or out of place, but the possibilities and potential for more build buildcrafting ideas for make using the class be fun in PvE and PvP.