it came up in my game and i wasn't sure how to handle it. so if you take 4 spirits and get them to conceal you. does it stack? ie. if they're force 5 spirits you have 20 concealment, or do you have 5 concealment 4 times?

i didnt see anything that mentioned stacking spirit powers. as far as im concerned they would stack. i think only nature spirits have concealment(dont quote me on that) and only one can be summoned one at a time by a shaman.

so unless you have multiple shamans i dont know how it would come up.