Abby, Merciless Soldier, Mana Echoes, Pitiless Plunderer, and Goblin Bombardment

Prerequisites

• Abby, Merciless Soldier in the command zone
• Mana Echoes on the battlefield
• Pitiless Plunderer on the battlefield
• Goblin Bombardment on the battlefield
• plus enough mana to pay for Abby's commander tax available

Steps

1. Cast Abby from the command zone by paying plus commander tax
2. Abby triggers, creating a number of 1/1 Cordyceps Infected creature tokens
3. When the Cordyceps Infected tokens enter, Mana Echoes triggers that many times, adding for each Fungus and/or Zombie you control for each trigger
4. Resolve Abby, giving control of it to an opponent
5. Activate Goblin Bombardment four times by sacrificing four Cordyceps Infected tokens
6. When the Cordyceps Infected tokens die, Pitiless Plunderer triggers four times, creating four Treasure tokens
7. Resolve the Goblin Bombardment abilities, dealing 4 damage to Abby
8. Abby dies as a state-based action due to having 0 toughness
9. Choose to return it to the command zone from your graveyard
10. Activate two Treasures by tapping and sacrificing them, adding
11. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite damage
• Infinite storm count
• Infinite creature tokens
• Infinite Treasure tokens
• Infinite commander casts