Activate Viscera Seer by sacrificing Nether Traitor.
When Nether Traitor dies, Anafenza and Pitiless Plunderer trigger, creating a 2/2 Spirit creature token and a Treasure token.
Resolve the Viscera Seer ability.
Activate the Treasure by tapping and sacrificing it, adding {B}.
Activate Viscera Seer by sacrificing the Spirit.
When the Spirit dies, Nether Traitor and Pitiless Plunderer trigger.
Resolve the Nether Traitor trigger, causing you to pay {B} to return it from your graveyard to the battlefield.
Resolve the Pitiless Plunderer trigger, creating a Treasure token.
Resolve the Viscera Seer ability.
Repeat.

Infinite artifact ETB

Infinite artifact LTB

Infinite artifact sacrifice triggers

Infinite artifact tokens

Infinite creature LTB

Infinite creature ETB

Infinite colored mana

Infinite creature sacrifice triggers

Infinite death triggers

Infinite scry 1

Infinite Treasure tokens

Anafenza, Unyielding Lineage

Nether Traitor

Pitiless Plunderer

Viscera Seer

Activate Phyrexian Altar by sacrificing Nether Traitor, adding {B}.
When Nether Traitor dies, Anafenza triggers, creating a 2/2 Spirit creature token.
Activate Phyrexian Altar by sacrificing the Spirit, adding one mana of any color.
When the Spirit dies, Nether Traitor triggers, causing you to pay {B} to return Nether Traitor from your graveyard to the battlefield.
Repeat.

Phyrexian Altar

Activate Umbral Collar Zealot by sacrificing Nether Traitor.
When Nether Traitor dies, Anafenza triggers, creating a 2/2 Spirit creature token.
Resolve the Umbral Collar Zealot ability.
Activate Umbral Collar Zealot by sacrificing the Spirit.
When the Spirit dies, Nether Traitor triggers, causing you to pay {B} to return Nether Traitor from your graveyard to the battlefield.
Kheru Goldkeeper triggers, creating a Treasure token.
Resolve the Umbral Collar Zealot ability.
Activate the Treasure by tapping and sacrificing it, adding {B}.
Repeat.

Infinite surveil

Kheru Goldkeeper

Umbral Collar Zealot

Combos with "Anafenza, Unyielding Lineage"