Legion Extruder, Dross Scorpion, and Mana Echoes

Prerequisites

• Legion Extruder on the battlefield
• Dross Scorpion on the battlefield
• Mana Echoes on the battlefield
• available

Steps

1. Activate Legion Extruder by paying , tapping it and sacrificing another artifact creature you control
2. When the artifact creature dies, Dross Scorpion triggers, untapping Legion Extruder
3. Resolve the Legion Extruder ability, creating a 3/3 Golem artifact creature token
4. When the Golem enters the battlefield, Mana Echoes triggers, adding at least
5. Repeat
6. If you control at least two Golems when the combo starts, this combo nets infinite colorless mana

Results

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