How to get Astilla Prime Blueprint in Warframe?

Astilla 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 Astilla Prime Blueprint

• Lith T11 (Uncommon) - Vaulted
• Meso H3 (Uncommon) - Vaulted
• Meso I2 (Uncommon) - Vaulted
• Meso R5 (Uncommon) - Vaulted
• Neo T4 (Uncommon) - Vaulted
• Axi G7 (Uncommon) - Vaulted
• Axi N9 (Uncommon) - Vaulted