Matoya, Archon Elder, The Locust God, Eloise, Nephalia Sleuth, and Phyrexian Altar

Prerequisites

• Matoya, Archon Elder on the battlefield
• The Locust God on the battlefield
• Eloise, Nephalia Sleuth on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing a creature token, adding one mana of any color
2. When the creature dies, Eloise's first and second abilities trigger, causing you to create a Clue token and then to surveil 1
3. Matoya triggers, causing you to draw a card
4. The Locust God triggers, creating a 1/1 Insect creature token with flying and haste
5. Repeat

Results

• Infinite card draw
• Near-infinite ETB
• Infinite draw triggers
• Near-infinite LTB
• Near-infinite death triggers
• Near-infinite sacrifice triggers
• Near-infinite colored mana