Ashnod's Altar + Colfenor, the Last Yew + Endless One + Walking Ballista

WBG identity

Commander legal

The 4 combo pieces

What must be in place

At least one +1/+1 counter on Walking Ballista.

How to execute it

  1. Sacrifice Walking Ballista to Ashnod's Altar for {C}{C}.
  2. Colfenor triggers, returning Endless One from your graveyard to your hand.
  3. Cast Endless One for {1}.
  4. Sacrifice Endless One to Ashnod's Altar for {C}{C}.
  5. Colfenor triggers, returning Walking Ballista from your graveyard to your hand.
  6. Cast Walking Ballista for {2}.
  7. Repeat.

What the combo produces