Doc Samson, Super Psychiatrist + Horseshoe Crab + Marvin, Murderous Mimic

GU identity

Commander legal

The 3 combo pieces

What must be in place

Marvin does not have summoning sickness.

How to execute it

  1. Activate Marvin using Doc Samson's ability by tapping it, adding at least {U}{U}.
  2. Activate Marvin using Horseshoe Crab's ability by paying {U}, untapping it.
  3. Repeat.

What the combo produces