Conquer and Acquire

Defeat the final wave in Escalation Protocol with a fully charged Encrypted Cache Key to open the final chest and retrieve your reward. Rasputin Key Fragments drop occasionally during Nightfall strikes. Collect 7 Key Fragments and trade them to Ana Bray for an Encrypted Cache Key. Charge your Cache Key by completing rounds of Escalation Protocol.
Legendary Quest Step
2019.10.01 (Shadowkeep)