Activate Kiki-Jiki by tapping it, creating a token copy of Faceless Butcher.
When the Faceless Butcher token enters the battlefield, it triggers, exiling Kiki-Jiki until Faceless Butcher leaves the battlefield.
Activate Viscera Seer by sacrificing the Faceless Butcher token.
When the Faceless Butcher token dies, it triggers, returning Kiki-Jiki from exile to the battlefield.
Resolve the Viscera Seer ability.
Repeat.

Infinite creature LTB

Infinite creature ETB

Infinite creature sacrifice triggers

Infinite death triggers

Infinite scry 1

Kiki-Jiki, Mirror Breaker

Viscera Seer

Faceless Butcher

Cast Abdel Adrian from the command zone by paying {4}{W} and command tax, if applicable.
When Abdel Adrian enters the battlefield, it triggers, exiling Faceless Butcher and creating a 1/1 Soldier creature token.
When Faceless Butcher leaves the battlefield, it triggers, returning Restoration Angel from exile to the battlefield.
When Restoration Angel enters the battlefield, it triggers, blinking Abdel Adrian.
Abdel Adrian leaves and re-enters the battlefield, causing Faceless Butcher to return from exile to the battlefield, and triggering both Faceless Butcher and Abdel Adrian's abilities.
Resolve the Faceless Butcher trigger, exiling Restoration Angel until Faceless Butcher leaves the battlefield.
Resolve the Abdel Adrian trigger, exiling Faceless Butcher and creating a 1/1 Soldier creature token.
Repeat from step 3.

Infinite creature tokens

Infinite blinking of nonland permanents

Abdel Adrian, Gorion's Ward

Restoration Angel

Cast Abdel Adrian either from your hand or from the command zone by paying {4}{W} and command tax, if applicable.
Abdel Adrian enters the battlefield, exiling Oblivion Ring until Abdel Adrian leaves the battlefield, and creating a 1/1 Soldier creature token.
Oblivion Ring leaves the battlefield, triggering its second ability, returning Faceless Butcher from exile to the battlefield.
Faceless Butcher enters the battlefield, triggering its first ability, exiling Abdel Adrian.
Abdel Adrian leaves the battlefield, returning Oblivion Ring from exile to the battlefield.
Oblivion Ring enters the battlefield, triggering its first ability, exiling Faceless Butcher.
Faceless Butcher leaves the battlefield, triggering its second ability, returning Abdel Adrian from exile to the battlefield.
Repeat from step 2.

Oblivion Ring

Cast Faceless Butcher by paying its mana cost.
When Faceless Butcher enters, its first ability triggers, exiling Karmic Guide.
Activate Viscera Seer by sacrificing Faceless Butcher.
When Faceless Butcher dies, its second ability triggers, returning Karmic Guide from exile to the battlefield.
When Karmic Guide enters, it triggers, returning Faceless Butcher from your graveyard to the battlefield.
When Faceless Butcher enters, its first ability triggers, exiling Karmic Guide.
Resolve the Viscera Seer ability.
Repeat from step 3.

Karmic Guide

Cast Abdel Adrian either from your hand or from the command zone by paying {4}{W} and command tax, if applicable.
Abdel Adrian enters the battlefield, exiling Journey to Nowhere until Abdel Adrian leaves the battlefield, and creating a 1/1 Soldier creature token.
Journey to Nowhere leaves the battlefield, triggering its second ability, returning Faceless Butcher from exile to the battlefield.
Faceless Butcher enters the battlefield, triggering its first ability, exiling Abdel Adrian.
Abdel Adrian leaves the battlefield, returning Journey to Nowhere from exile to the battlefield.
Journey to Nowhere enters the battlefield, triggering its first ability, exiling Faceless Butcher.
Faceless Butcher leaves the battlefield, triggering its second ability, returning Abdel Adrian from exile to the battlefield.
Repeat from step 2.

Journey to Nowhere

Cast Faceless Butcher by paying {2}{B}{B}.
Faceless Butcher enters the battlefield, triggering itself and Dual Nature's first ability.
Resolve the Faceless Butcher trigger, choosing not to exile anything.
Resolve the Dual Nature trigger, creating a token copy of Faceless Butcher.
The token Faceless Butcher enters the battlefield, exiling the nontoken Faceless Butcher.
Faceless Butcher leaves the battlefield, triggering Dual Nature's second ability, exiling the Faceless Butcher token.
The Faceless Butcher token leaves the battlefield, triggering its second ability, returning the nontoken Faceless Butcher from exile to the battlefield.
Repeat from step 2.

Exile all creatures opponents control

Infinite blinking

Dual Nature

Cast Faceless Butcher by paying its mana cost.
When Faceless Butcher enters, it and Radiant Solar trigger.
Resolve the Faceless Butcher trigger, exiling Veteran Dungeoneer.
Resolve the Radiant Solar trigger, venturing into the Oubliette room, causing you to discard a card and then sacrifice Faceless Butcher.
When Faceless Butcher dies, it triggers, returning Veteran Dungeoneer from exile to the battlefield.
When Veteran Dungeoneer enters, it and Radiant Solar trigger.
Resolve the Veteran Dungeoneer trigger, venturing into the Cradle of the Death God room, creating a 4/4 legendary The Atropal creature token and completing Tomb of Annihilation.
If you control two or more The Atropal tokens, put all but one into your graveyard due to the legend rule.
Sefris' second ability triggers, returning Faceless Butcher from your graveyard to the battlefield.
When Faceless Butcher enters, it and Radiant Solar trigger.
Resolve the Faceless Butcher trigger, exiling Veteran Dungeoneer.
Resolve the Radiant Solar trigger from step 10, venturing into Tomb of Annihilation and into the Trapped Entry room, causing each player to lose 1 life.
Resolve the Radiant Solar trigger from step 6, venturing into the Oubliette room, causing you to discard a card and then sacrifice Faceless Butcher.
Repeat from step 5.

Near-infinite creature ETB

Near-infinite creature LTB

Near-infinite death triggers

Near-infinite lifeloss for all players

Near-infinite creature sacrifice triggers

Radiant Solar

Sefris of the Hidden Ways

Veteran Dungeoneer

Cast Nature's Rhythm by paying at most {4}{G}{G}{G}{G}, searching your library for Faceless Butcher and putting it onto the battlefield.
When Faceless Butcher enters, it and Preston trigger.
Resolve the Faceless Butcher trigger, exiling another creature if needed.
Resolve the Preston trigger, creating a token copy of Faceless Butcher that is a 0/1 Illusion.
When the Faceless Butcher token enters, it triggers, exiling the nontoken Faceless Butcher.
Activate Bartolomé del Presidio by sacrificing the Faceless Butcher token
When the Faceless Butcher token dies, it triggers, returning Faceless Butcher from exile to the battlefield.
Repeat from step 2.

Combos with "Faceless Butcher"