Agatha's Soul Cauldron + Berta, Wise Extrapolator + Crystalline Crawler + Farmstead Gleaner

Mana needed: {1}

GU identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Berta using Crystalline Crawler's last activated ability by tapping them, putting a +1/+1 counter on Berta.
  2. Berta's second ability triggers, adding one mana of any color.
  3. Activate Berta using Farmstead Gleaner's ability by paying {2} and untapping them, putting a +1/+1 counter on Berta.
  4. Berta's second ability triggers, adding one mana of any color.
  5. Repeat any number of times.
  6. Once you have infinite +1/+1 counters on Berta, you may activate them using Crystalline Crawler's first activated ability any number of times, adding infinite mana.

What the combo produces