Ashnod's Altar + Grazing Kelpie + Mikaeus, the Unhallowed

BGU identity

Commander legal

The 3 combo pieces

• Ashnod's Altar
• Grazing Kelpie
• Mikaeus, the Unhallowed

How to execute it

1. Activate Ashnod's Altar 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. Activate Ashnod's Altar by sacrificing Grazing Kelpie.
4. When Grazing Kelpie dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
5. Repeat.

What the combo produces

• Infinite colorless mana
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers