How to get Spira Prime Blade in Warframe?

Spira Prime Blade 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 Spira Prime Blade

• Lith S5 (Rare) - Vaulted
• Meso S6 (Rare) - Vaulted
• Neo S10 (Uncommon) - Vaulted
• Neo S3 (Rare) - Vaulted
• Axi V9 (Uncommon) - Vaulted