WarframeAlchemyLab ES
Streamlined Form

Farming plan

Streamlined Form

Arsenal: Streamlined Form
Dropped by
Nightmare Mode Rewards, Rotation C Uncommon 22.56 %
Chance of getting it by number of runs
0% 25% 50% 75% 100% 3 6 8 11 14 3 runs · 50% 3 runs · 50% 10 runs · 90% 10 runs · 90%

Each run has a 22.56% chance. The curve is 1−(1−p)ⁿ: there is never a guarantee, only growing confidence.