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Countermeasures: Drop sources, locations, and probabilities

Missions with a Chance to Get Countermeasures as a Reward

Planet / Mission Type RotationProbability
Pluto / Peregrine Axis Caches A 8.33
Pluto / Profit Margin Caches A 8.33
Pluto / Fenton's Field Caches A 8.33
Pluto / Obol Crossing Caches A 8.33
Pluto / Seven Sirens Caches A 8.33
Pluto / Khufu Envoy Caches A 8.33
Neptune / Brom Cluster Caches A 8.33
Neptune / Sovereign Grasp Caches A 8.33
Neptune / Mammon's Prospect Caches A 8.33
Neptune / Enkidu Ice Drifts Caches A 8.33
Neptune / Nu-Gua Mines Caches A 8.33
Neptune / Arva Vector Caches A 8.33
Saturn / Vand Cluster Caches 4.03
Saturn / Lupal Pass Caches 4.03
Saturn / Nodo Gap Caches 4.03
Saturn / Kasio's Rest Caches 4.03
Saturn / Mordo Cluster Caches 4.03

Warframe Rotations Explained

  • Caches: Number of resource caches opened:
     - Rotation A: one.
     - Rotation B: two.
     - Rotation C: all three.


Mobs Dropping Countermeasures

EnnemyProbability
Elite Kosma Outrider 11.38%
Kosma Outrider 11.38%
Elite Gyre Outrider 10.86%
Gyre Outrider 10.86%
Vorac Gox 10.77%
Axio Gox 10.47%
Elite Exo Outrider 7.73%
Exo Outrider 7.73%
Orm Gox 7.73%