Talk:Vox Solaris (Syndicate)/@comment-2037710-20181111012712/@comment-5.10.4.199-20181111211200

I´m sure you already unlocked the Operator after the Second Dream Quest. https://warframe.fandom.com/wiki/The_Second_Dream You have to choose a school for your operator at the end. After completion you can use your operator in every mission except lower MrTests and Archwing-Only missions.