Talk:Excalibur (Warframe)/@comment-122.52.163.67-20150909045840

im predicting that the umbra series will come from the sentients, oculyst scanned and got alot of info about our warfarmes that helped the sentients make their own version of it, and viola! Umbra series...and as usual, Excalibur is the 1st...a war between Warframes are coming...