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.

Axe Of The Heavens

Blade Of Insanity

BoneCrusher

Breath Of The Dead

Frostbringer

Serpents Fang

HolyKnights Breastplate

Legacy Of The DreadLord

Ornate Crown Of The Harrower

Ring Of The Element

Ring Of The Vile

ShadowDancer Leggings

The DragonSlayer

The Taskmaster

Tunic Of Fire

Pink Replica Bundle

Rum Red Replica Bundle

Violet Courage Purple Replica Bundle

Aegis

Arcane Shield

Armor Of Fortune

Bracelet Of Health

Divine Countenance

Gauntlets Of Nobility

Hat Of The Magi

Helm Of Insight

Hunters Headdress

Jackals Collar

Leggings Of Bane

Midnight Bracers

Ornament Of The Magician

Spirit Of The Totem

Staff Of The Magi

The Beserkers Maul

The Dryad Bow

Voice Of The Fallen King