Whenever an opponent controls a nonblack creature, if you control a Treasure, activate it by tapping and sacrificing it, adding {B}.
Activate Attrition by paying {B} and sacrificing Lucius, targeting a nonblack creature an opponent controls.
When Lucius dies, it and Pitiless Plunderer trigger.
Resolve the Lucius trigger, exiling it from your graveyard and targeting the creature that Attrition is targeting.
Resolve the Pitiless Plunderer trigger, creating a Treasure token.
Resolve the Attrition trigger, destroying the targeted creature.
When the creature dies, Lucius triggers, returning it from exile to the battlefield under your control.
Repeat as needed.

Destroy all nonblack creatures that enter the battlefield under an opponent's control

Destroy all nonblack creatures opponents control

Lucius the Eternal

Pitiless Plunderer

Attrition

Activate Goblin Bombardment by sacrificing Lucius the Eternal, targeting a creature an opponent controls with toughness equal to 1.
When Lucius the Eternal dies, it triggers, exiling it from your graveyard and choosing the creature targeted in step 1.
Resolve the Goblin Bombardment ability, dealing 1 damage to the creature, destroying it.
When the creature dies, Lucius the Eternal triggers, returning itself from exile to the battlefield.
When Lucius the Eternal enters the battlefield, Confusion in the Ranks and Genesis Chamber trigger.
Resolve the Genesis Chamber trigger, creating a 1/1 Myr artifact creature token.
When the Myr enters the battlefield, Confusion in the Ranks triggers, exchanging control of the Myr and an artifact or creature an opponent controls.
Repeat from step 1.

Gain control of all artifacts

Gain control of all creatures

Genesis Chamber

Confusion in the Ranks

Goblin Bombardment

Activate Blasting Station by tapping it and sacrificing Lucius the Eternal, targeting a creature an opponent controls with toughness equal to 1.
When Lucius the Eternal dies, it triggers, exiling it from your graveyard and choosing the creature targeted in step 1.
Resolve the Blasting Station ability, dealing 1 damage to the creature, destroying it.
When the creature dies, Lucius the Eternal triggers, returning itself from exile to the battlefield.
When Lucius the Eternal enters the battlefield, Confusion in the Ranks, Blasting Station and Genesis Chamber trigger.
Resolve the Genesis Chamber trigger, creating a 1/1 Myr artifact creature token.
When the Myr enters the battlefield, Confusion in the Ranks and Blasting Station trigger.
Resolve the Confusion in the Ranks trigger, exchanging control of the Myr and an artifact or creature an opponent controls.
Resolve the Blasting Station trigger, untapping it.
Repeat from step 1.

Combos with "Lucius the Eternal"