Krenko, Baron of Tin Street + Pitiless Plunderer + Phantom Train

Krenko, Baron of Tin Street

Pitiless Plunderer

Phantom Train

How it works

1. Activate a Treasure by tapping and sacrificing it, adding .
2. Krenko triggers, causing you to pay to create a 1/1 Goblin creature token with haste.
3. Activate Phantom Train by sacrificing the Goblin token.
4. When the Goblin dies, Pitiless Plunderer triggers, creating a Treasure token.
5. Resolve the Phantom Train ability
6. Repeat.

This loop turns a single sacrifice outlet into a self-sustaining engine by turning treasures and goblins into endless fodder. You begin by tapping a Treasure for mana, which Krenko, Baron of Tin Street uses to fuel his triggered ability whenever an artifact hits the graveyard, spawning a hasty Goblin token in the process. Phantom Train then steps in as the sacrifice engine, devouring that Goblin to pump itself up while neatly triggering Pitiless Plunderer to generate a brand new Treasure token. Because the treasure generated replaces the one you started with and refunds the mana needed for Krenko's trigger, the whole process endlessly feeds itself to pump Phantom Train while generating infinite death and sacrifice triggers.