God-Eternal Oketra, Oketra's Monument, Phyrexian Altar, and Whitemane Lion

Prerequisites

• God-Eternal Oketra on the battlefield
• Oketra's Monument on the battlefield
• Phyrexian Altar on the battlefield
• Whitemane Lion in hand
• available

Steps

1. Cast Whitemane Lion
2. God-Eternal Oketra, and Oketra's Monument trigger creating 2 tokens
3. Whitemane Lion's enter the battlefield trigger allows you to return itself to your hand
4. Sacrifice a token creature to Phyrexian Altar for
5. Repeat

Results

• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colored mana
• Infinite ETB
• Infinite LTB
• Infinite creature tokens