Arbor Elf + Fertile Ground + Pemmin's Aura

GU identity

Commander legal

The 3 combo pieces

What must be in place

Pemmin's Aura attached to Arbor Elf.
Fertile Ground attached to a Forest you control.

How to execute it

  1. Activate Arbor Elf by tapping it, untapping the enchanted forest.
  2. Activate the Forest by tapping it, adding {U}{G}.
  3. Activate Pemmin's Aura by paying {U}, untapping Arbor Elf.
  4. Repeat.

What the combo produces