Legion Extruder + Dross Scorpion + Mana Echoes

Legion Extruder

Dross Scorpion

Mana Echoes

How it works

1. Activate Legion Extruder by paying 2, 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 CC.
5. Repeat.
6. If you control at least two Golems when the combo starts, this combo nets infinite colorless mana.

This ingenious loop transforms basic mechanical parts into a self-sustaining engine by tying together death triggers, untap effects, and tribal scaling. It all starts when you tap Legion Extruder, sacrificing an artifact creature to fuel its ability and birth a fresh 3/3 Golem. The moment that sacrifice happens, Dross Scorpion springs into action, using its death-triggered ability to instantly untap Legion Extruder so the process can begin anew. Meanwhile, every time that Golem arrives, Mana Echoes watches it enter and floods your mana pool with an escalating wave of colorless mana, easily providing the {2} required to keep Legion Extruder firing while netting a surplus.