WarframeAlchemyLab ES
Fetch

Farming plan

Fetch

Arsenal: Fetch
Dropped by
Cinderthresh Hyena Uncommon 3.28 %
Gyre Hyena Uncommon 3.28 %
Icemire Hyena Uncommon 3.28 %
Rabbleback Hyena Uncommon 3.28 %
Deimos Undying Flyer Uncommon 0.5 %
Undying Flyer Uncommon 0.5 %
Deimos Carnis Rare 0.33 %
Deimos Jugulus Rare 0.33 %
Deimos Leaping Thrasher Rare 0.33 %
Deimos Saxum Rare 0.33 %
Leaping Thrasher Rare 0.33 %
Basal Diploid Rex Rare 0.19 %
Chance of getting it by number of runs
0% 25% 50% 75% 100% 16 32 48 64 80 21 runs · 50% 21 runs · 50% 70 runs · 90% 70 runs · 90%

Each run has a 3.28% chance. The curve is 1−(1−p)ⁿ: there is never a guarantee, only growing confidence.