Horseshoe Crab + Kinnan, Bonder Prodigy + Paradise Mantle

GU identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Horseshoe Crab by tapping it, adding {U}.
  2. Kinnan triggers, adding {U}.
  3. Activate Horseshoe Crab by paying {U}, untapping it.
  4. Repeat.

What the combo produces