Heartmender + Mikaeus, the Unhallowed + Yahenni, Undying Partisan

WBG identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Yahenni by sacrificing Heartmender.
  2. When Heartmender dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. Resolve the Yahenni ability.
  4. Activate Yahenni by sacrificing Heartmender.
  5. When Heartmender dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  6. Resolve the Yahenni ability.
  7. Repeat.

What the combo produces