Prismatic Geoscope + Retrofitter Foundry + Trazyn the Infinite

B identity

Commander legal

The 3 combo pieces

What must be in place

There are at least four basic land types among lands you control

How to execute it

  1. Activate Trazyn using Prismatic Geoscope's ability by tapping it, adding at least four mana of any color.
  2. Activate Trazyn using Retrofitter Foundry's ability by paying {3}, untapping it.
  3. Repeat.

What the combo produces