Dark Father has an artifact chance of 5% WITHOUT LUCK
Dark Father has an artifact chance of 15% with 1200 LUCK
Doom mini bosses (Impaler, ShadowKnight, FleshRenderer, AbysmalHorror) have an artifact chance of 1.875%
without LUCK
Doom mini bosses (Impaler, ShadowKnight, FleshRenderer, AbysmalHorror) have an artifact chance of 3.125% with
1200 LUCK
LUCK beyond 1200 does give increased artifact drop chance from both mini bosses and the Dark Father
If an artifact drops, there is a split chance between 2 groups for which artifacts will drop. The lesser artifacts and Replica Bundles drop more frequently than the better artifacts.