Mephidross Vampire + Triskelion

B identity

Commander legal

The 2 combo pieces

What must be in place

Triskelion has at least one +1/+1 counter on it.

How to execute it

  1. Activate Triskelion by removing a +1/+1 counter from it, dealing 1 damage to any creature an opponent controls.
  2. Triskelion triggers, putting a +1/+1 counter on itself.
  3. Repeat as desired.
  4. You may also repeat this loop whenever a creature enters the battlefield under an opponent's control.

What the combo produces