Ashnod's Altar + Denry Klin, Editor in Chief + Relentless Skaabs

WU identity

Commander legal

The 3 combo pieces

What must be in place

Denry Klin has at least one -1/-1 counter on it.
Relentless Skaabs does not have a +1/+1 counter on it.

How to execute it

  1. Activate Ashnod's Altar by sacrificing Relentless Skaabs, adding {C}{C}.
  2. Relentless Skaabs dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  3. Relentless Skaabs enters the battlefield, triggering Denry Klin, putting a -1/-1 counter on Relentless Skaabs.
  4. Repeat.

What the combo produces