Covert Lethality: Drop sources, locations, and probabilities

Tips

Here are the missions where you can get Covert Lethality in Warframe:

• Kuva Fortress/Pago : It's a Spy mission (level 31-33). The item is dropped on rotation B (10.00%).
• Uranus/Rosalind : It's a Spy mission (level 27-29). The item is dropped on rotation C (7.04%).
• Neptune/Nereid : It's a Spy mission (level 30-32). The item is dropped on rotation C (7.04%).
• Pluto/Oceanum : It's a Spy mission (level 32-36). The item is dropped on rotation C (7.04%).
• Sedna/Kelpie : It's a Spy mission (level 35-40). The item is dropped on rotation C (7.04%).

These recommendations are based on the usual missions lengths, and the probability of getting the resource dropped.

Missions with a Chance to Get Covert Lethality as a Reward

Warframe Rotations Explained

• Spy: One rotation level gained per vault unlocked.
  First vault is rotation A, two vaults is rotation B, all three vaults unlocked is rotation C.