Mana Echoes, Propagator Drone, and Energy Refractor

Prerequisites

• Mana Echoes on the battlefield
• Propagator Drone on the battlefield
• Energy Refractor on the battlefield
• at most available

Steps

1. Activate Propagator Drone by paying , creating a 0/1 Eldrazi Spawn creature token
2. When the Eldrazi Spawn enters, Mana Echoes triggers, adding for each Eldrazi and Spawn you control
3. If needed, activate Energy Refractor by paying , adding
4. Repeat

Results

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