Activate Krark-Clan Ironworks by sacrificing another artifact, which is a Food due to Ragost.
Nuka-Cola Vending Machine triggers, creating a tapped Treasure token.
Repeat.

Infinite artifact ETB

Infinite artifact LTB

Infinite colorless mana

Ragost, Deft Gastronaut

Nuka-Cola Vending Machine

Krark-Clan Ironworks

Activate a Food by paying {2}, tapping and sacrificing it.
Nuka-Cola Vending Machine triggers, creating a tapped Treasure token that is a Food due to Ragost.
When the Treasure enters, Amulet of Vigor triggers, untapping the Treasure.
Resolve the Food ability from step 1, causing you to gain 3 life.
Activate the Treasure by tapping and sacrificing it, adding one mana of any color.
Nuka-Cola Vending Machine triggers, creating a tapped Treasure token that is a Food due to Ragost.
When the Treasure enters, Amulet of Vigor triggers, untapping the Treasure.
Repeat from step 5.

Infinite artifact sacrifice triggers

Infinite colored mana

Infinite lifegain triggers

Infinite lifegain

Amulet of Vigor

Activate Warren Soultrader by paying 1 life and sacrificing Cauldron Familiar, creating a Treasure token.
Activate Cauldron Familiar by sacrificing the Treasure, which is a Food due to Ragost, returning Cauldron Familiar from your graveyard to the battlefield.
When Cauldron Familiar enters, it triggers, causing each opponent to lose 1 life and you to gain 1 life.
Repeat.

Infinite creature LTB

Infinite creature ETB

Infinite death triggers

Infinite lifeloss

Cauldron Familiar

Warren Soultrader

Activate Basalt Monolith's first ability by tapping it, adding {C}{C}{C}.
Activate Basalt Monolith's second ability by paying {2}, which is reduced due to Ragost making it a Food and Sam's reduction, untapping it.
Repeat.

Sam, Loyal Attendant

Basalt Monolith

Cast Cauldron Familiar by paying {B}.
When Cauldron Familiar enters, it and Weapons Manufacturing trigger.
Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
Resolve the Weapons Manufacturing trigger, creating a Munitions artifact token.
Activate Krark-Clan Ironworks by sacrificing Cauldron Familiar.
Activate Cauldron Familiar by sacrificing the Munitions, as it is a Food due to Ragost.
The Munitions triggers, dealing 2 damage to any target.
Resolve the Cauldron Familiar ability, returning it from your graveyard to the battlefield.
Repeat from step 2.

Infinite creature sacrifice triggers

Infinite damage

Weapons Manufacturing

Mycosynth Lattice

Activate Cauldron Familiar by sacrificing Sword of the Meek, which is a Food due to Ragost, returning Cauldron Familiar from your graveyard to the battlefield.
When Cauldron Familiar enters, it and Sword of the Meek trigger.
Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
Resolve the Sword of the Meek trigger, returning it from your graveyard to the battlefield attached to Cauldron Familiar.
Activate Evereth by sacrificing Cauldron Familiar.
Repeat.

Infinite +1/+1 counters on a creature

Sword of the Meek

Evereth, Viceroy of Plunder

Combos with "Ragost, Deft Gastronaut"