Goblin Warrens + Mana Echoes + Thermopod

Goblin Warrens

Mana Echoes

Thermopod

How it works

1. Activate Goblin Warrens by paying 2 and sacrificing two Goblins, creating three 1/1 Goblin creature tokens.
2. When the Goblins enter the battlefield, Mana Echoes triggers three times, adding CCC for each Goblin you control.
3. Activate Thermopod's second ability by sacrificing a Goblin, adding .
4. Repeat.

This loop turns a modest pile of Goblins into a self-sustaining manufacturing plant by exploiting the exponential scaling of Mana Echoes. As each new batch of tokens hits the board, Mana Echoes floods your pool with colorless mana based on your total Goblin count, which you can easily filter into red mana by feeding those same tokens to Thermopod. With your mana needs fully covered, you pump the proceeds back into Goblin Warrens to generate fresh fodder, keeping the loop spinning indefinitely to harvest infinite triggers and resources.