Goblin Warrens, Mana Echoes, and Thermopod

Prerequisites

• Goblin Warrens on the battlefield
• Mana Echoes on the battlefield
• Thermopod on the battlefield
• You control at least two Goblins
• available

Steps

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

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana