How to get Pyrana Prime Blueprint in Warframe?

Pyrana 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 Pyrana Prime Blueprint

• Lith P1 (Rare) - Vaulted
• Lith P2 (Rare) - Vaulted
• Lith P7 (Rare) - Vaulted
• Meso P1 (Rare) - Vaulted
• Meso P6 (Rare) - Vaulted
• Axi P1 (Rare) - Vaulted
• Axi P2 (Rare) - Vaulted
• Axi P3 (Rare) - Vaulted