I just played the heroic strike playlist for 5.5 hours and I never played the Fallen SABER strike. The strike I played the most was Valus Ta'Arc. -blam!-ing dumb bungie. I am still looking for the Fallen SABER warlock helmet and I have done that strike about 30 times and yet it still alludes me. I was hoping to try to get the strike with the "vanguard streak" buff, but within that 5.5 hours I never got to play that strike.