Atla Palani, Nest Tender, Arashin Sovereign, Maskwood Nexus, and Phyrexian Altar

Prerequisites

• Atla Palani, Nest Tender on the battlefield
• Arashin Sovereign on the battlefield
• Maskwood Nexus on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Arashin Sovereign, adding one mana of any color
2. Arashin Sovereign dies, triggering itself and Atla Palani
3. Resolve the Arashin Sovereign trigger, putting it on top of your library from your graveyard
4. Resolve the Atla Palani trigger, revealing Arashin Sovereign from the top of your library and putting it onto the battlefield
5. Repeat

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite colored mana
• Near-infinite death triggers
• Near-infinite sacrifice triggers
• Put all creature cards in your library onto the battlefield, then into your graveyard