How to get Oberon Prime Blueprint in Warframe?

Oberon Prime Blueprint is an item dropped from Void relics.
You can find the list of relics below, and click on the links to see how to get them.

Relics dropping Oberon Prime Blueprint

Other items:
Oberon Prime Systems Blueprint - Oberon Markhor Helmet Blueprint - Oberon Oryx Helmet Blueprint
Oberon Chassis Blueprint - Oberon Systems Blueprint - Oberon Prime Neuroptics Blueprint