WarframeAlchemyLab ES
Melee Duplicate

Farming plan

Melee Duplicate

Arsenal: Melee Duplicate
Dropped by
Deep Archimedea Legendary Rewards Uncommon 25 %
Deep Archimedea Gold Rewards Uncommon 15 %
Deep Archimedea Silver Rewards Uncommon 10 %
Entrati Netracell Coffer (Level 0 - 100) Uncommon 10 %
Chance of getting it by number of runs
0% 25% 50% 75% 100% 3 5 8 10 13 3 runs · 50% 3 runs · 50% 9 runs · 90% 9 runs · 90%

Each run has a 25% chance. The curve is 1−(1−p)ⁿ: there is never a guarantee, only growing confidence.