Mikaeus, the Unhallowed + Phyrexian Altar + Restless Apparition

WB identity

Commander legal

The 3 combo pieces

• Mikaeus, the Unhallowed
• Phyrexian Altar
• Restless Apparition

How to execute it

1. Activate Phyrexian Altar by sacrificing Restless Apparition.
2. When Restless Apparition dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Activate Phyrexian Altar by sacrificing Restless Apparition.
4. When Restless Apparition 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 colored mana
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers