Branching Evolution + Paradise Mantle + Pheres-Band Tromper + Sinking Feeling

GU identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Pheres-Band Tromper by tapping it, adding {1}.
  2. Activate Pheres-Band Tromper by paying {1} and putting a -1/-1 counter on it, untapping it.
  3. Pheres-Band Tromper triggers, putting two +1/+1 counters on it.
  4. Repeat.

What the combo produces