Grazing Kelpie + Mikaeus, the Unhallowed + Yahenni, Undying Partisan

BGU identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Yahenni by sacrificing Grazing Kelpie.
  2. When Grazing Kelpie 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 Grazing Kelpie.
  5. When Grazing Kelpie 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