Farming plan

Steel Fiber

Dropped by

Tyl Regor Uncommon 25.81 %

Necramech (Tier 1) Uncommon 3.32 %

Crawler Common 1.14 %

Nox Uncommon 0.58 %

Chance of getting it by number of runs

Each run has a 25.81% chance. The curve is 1−(1−p)ⁿ: there is never a guarantee, only growing confidence.