i have been monitoring xur, keeping track of what hes been selling. after he sold no gun xur has gone on a rampage selling some of the faveroite exotics of the gaurdians. starting with the ok patence in time, and has sold, surouse regieme, the last word, and now gjalahorn. hes trying to get us to spend all our strange coins, before the taken king releases. so save your coins, whatever he sells for TTK, is gona be totaly OP. just to put it out there ive heard hes allowed to but hasnt sold thunder lord or hardlight, im guesing thats gonna be what he sells the last friday before, TTK. the best ways to get strange coins are the weekly heroic, saving engrams, and doing prison of elders. hope it helped. :)