History of Standard

A Standard is an item collected from the Standard Bearers in the Nightmare realm of the Nightmare of Gahlran encounter in the Duality dungeon. Players carry the Standards to the Waking World and place them, which opens the locked side rooms. Inside those rooms players must kill the Visions of Gahlran; once both sides are cleared, Gahlran becomes vulnerable and teleports to the middle of the arena.

Reported counts differ: Destinypedia describes two Standards per run, while other guides describe four.