Arc Reactor + Scuttling Sliver + Trazyn the Infinite + Unnatural Selection

UB identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Trazyn using Arc Reactor's ability by tapping it, adding {C}{C}{C}
  2. Activate Unnatural Selection by paying {1}, causing Trazyn to become a Sliver until end of turn.
  3. Activate Trazyn by paying {2}, untapping it.
  4. Activate Trazyn using Arc Reactor's ability by tapping it, adding {C}{C}{C}
  5. Repeat from step 3.

What the combo produces