Basalt Monolith + Biomancer's Familiar + Karn, Silver Golem

GU identity

Commander legal

The 3 combo pieces

What must be in place

Basalt Monolith does not have summoning sickness.

How to execute it

  1. Activate Basalt Monolith's first ability by tapping it, adding {C}{C}{C}.
  2. Activate Karn by paying {1}, making Basalt Monolith a 3/3 artifact creature until end of turn.
  3. Activate Basalt Monolith's last ability by paying {1}, untapping it.
  4. Activate Basalt Monolith's first ability by tapping it, adding {C}{C}{C}.
  5. Repeat from step 3.

What the combo produces