WarframeAlchemyLab ES
Archon Shard

Farming plan

Archon Shard

Arsenal: Archon Shard
Dropped by
Deep Archimedea Silver Rewards Uncommon 17.5 %
Entrati Netracell Coffer (Level 0 - 100) Uncommon 17.5 %
Deep Archimedea Legendary Rewards Uncommon 16.67 %
Temporal Archimedea Silver Rewards Uncommon 15.33 %
Deep Archimedea Gold Rewards Uncommon 13.13 %
Temporal Archimedea Legendary Rewards Rare 9.11 %
The Descendia: Rare Rewards (Steel Path) Rare 7.52 %
Temporal Archimedea Gold Rewards Rare 7.45 %
Chance of getting it by number of runs
0% 25% 50% 75% 100% 3 7 10 14 17 4 runs · 50% 4 runs · 50% 12 runs · 90% 12 runs · 90%

Each run has a 17.5% chance. The curve is 1−(1−p)ⁿ: there is never a guarantee, only growing confidence.