Orah, Skyclave Hierophant + Phyrexian Altar + Sister Hospitaller + Valiant Changeling

WB identity

Commander legal

The 4 combo pieces

• Orah, Skyclave Hierophant
• Phyrexian Altar
• Sister Hospitaller
• Valiant Changeling

How to execute it

1. Activate Phyrexian Altar by sacrificing Valiant Changeling.
2. When Valiant Changeling dies, Orah triggers, returning Sister Hospitaller from your graveyard to the battlefield.
3. When Sister Hospitaller enters, it triggers, returning Valiant Changeling from your graveyard to the battlefield and causing you to gain 7 life.
4. Activate Phyrexian Altar by sacrificing Sister Hospitaller.
5. When Sister Hospitaller dies, Orah triggers, allowing you to return a Cleric with mana value 5 or less from your graveyard to the battlefield.
6. Repeat.

What the combo produces

• Infinite colored mana
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite recursion of some creature cards in your graveyard
• Infinite sacrifice triggers