Citanul Hierophants + Trusty Boomerang + Valley Floodcaller

GU identity

Commander legal

The 3 combo pieces

What must be in place

You control at least four in any combination of Birds, Frogs, Otters and Rats that don't have summoning sickness.

How to execute it

  1. Activate any number of Birds, Frogs, Otters and/or Rats by tapping them, adding at least {G}{G}{G}
  2. Cast Trusty Boomerang by paying {1}.
  3. Valley Floodcaller triggers, giving Birds, Frogs, Otters and Rats you control +1/+1 until end of turn and untapping them.
  4. Activate Trusty Boomerang's equip ability by paying {1}, attaching it to a Bird, Frog, Otter or Rat.
  5. Activate the creature by paying {1} and tapping it, returning Trusty Boomerang from the battlefield to your hand.
  6. Repeat.

What the combo produces