Mana Echoes + Myr Propagator + Urabrask the Hidden

Mana needed: {4} at most

R identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Myr Propagator by paying {3} and tapping it, creating a token copy of it.
  2. When the Myr Propagator token enters the battlefield, Mana Echoes triggers, adding {C} for each Myr you control.
  3. Repeat using the Myr Propagator token instead.

What the combo produces