I started play destiny not long ago and i played with with friends who are ahead of me, and I now realise that I cant use the prismatic, and i think its because I haven't done the cocoon quest, and I don't remember doing it but the quest wont show up
i have the season pass
and forskaken i think i also need beyond light but im not too sure
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Check the Wayfinder's Compass in the HELM to see if the quest shows up there. If not there, see if Mara inside the portal has it. And if not there, finally check the quest archive in the Tower next to the Postmaster.