Farming plan

Rupture

Dropped by

Electric Crawler Common 2.28 %

Carrion Charger Uncommon 0.57 %

Charger Uncommon 0.57 %

Deimos Charger Uncommon 0.57 %

Deimos Juggernaut Uncommon 0.57 %

Jack O'Naut Uncommon 0.57 %

Juggernaut Behemoth Uncommon 0.57 %

Juggernaut Uncommon 0.57 %

Polyp-Hog Juggernaut Uncommon 0.57 %

Chance of getting it by number of runs

Each run has a 2.28% chance. The curve is 1−(1−p)ⁿ: there is never a guarantee, only growing confidence.