Crab Umbra + Lightning-Rig Crew + Malcolm, Keen-Eyed Navigator

UR identity

Commander legal

The 3 combo pieces

What must be in place

Crab Umbra attached to Lightning-Rig Crew.
Lightning-Rig Crew does not have summoning sickness.

How to execute it

  1. Tap Lightning-Rig Crew to deal 1 damage to each opponent, creating 3 treasure tokens from Malcolm's trigger.
  2. Sacrifice 3 treasure token for {2}{U}.
  3. Activate Crab Umbra to untap Lightning-Rig Crew.
  4. Repeat.

What the combo produces