WarframeAlchemyLab ES
Stinging Thorn

Farming plan

Stinging Thorn

Arsenal: Stinging Thorn
Dropped by
Narmer Thumper Bull Uncommon 1.88 %
Narmer Thumper Uncommon 1.88 %
Tusk Thumper Bull Uncommon 1.88 %
Tusk Thumper Uncommon 1.88 %
Eidolon Vomvalyst Legendary 0.03 %
Chance of getting it by number of runs
0% 25% 50% 75% 100% 16 32 48 64 80 37 runs · 50% 37 runs · 50%

Each run has a 1.88% chance. The curve is 1−(1−p)ⁿ: there is never a guarantee, only growing confidence.