Goblin Warrens, Mana Echoes, and Pitiless Plunderer

Prerequisites

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

Steps

1. Activate Goblin Warrens by paying and sacrificing two Goblins
2. When the Goblins die, Pitiless Plunderer triggers twice, creating two Treasure tokens
3. Resolve the Goblin Warrens ability, creating three 1/1 Goblin creature tokens
4. When the Goblins enter the battlefield, Mana Echoes triggers three times, adding for each Goblin you control
5. Activate a Treasure by tapping and sacrificing it, adding
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite creature tokens
• Infinite Treasure tokens