Ashnod's Altar + Glen Elendra Guardian + Mikaeus, the Unhallowed

UB identity

Commander legal

The 3 combo pieces

• Ashnod's Altar
• Glen Elendra Guardian
• Mikaeus, the Unhallowed

How to execute it

1. Activate Ashnod's Altar by sacrificing Glen Elendra Guardian.
2. When Glen Elendra Guardian dies, its undying ability triggers, returning it from your graveyard to the battlefield without a +1/+1 counter on it due to its replacement effect.
3. Repeat.

What the combo produces

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