Eloise, Nephalia Sleuth, Chatterfang, Squirrel General, and Phyrexian Altar

Prerequisites

• Eloise, Nephalia Sleuth on the battlefield
• Chatterfang, Squirrel General on the battlefield
• Phyrexian Altar on the battlefield
• undefined

Steps

1. Activate Phyrexian Altar by sacrificing a creature, adding one mana of any color
2. Eloise triggers, creating a Clue token and a 1/1 Squirrel creature token
3. Activate Phyrexian Altar by sacrificing the Squirrel token, adding one mana of any color
4. Eloise triggers twice
5. Resolve the first Eloise trigger, surveiling one
6. Resolve the second Eloise trigger, creating a Clue token and a 1/1 Squirrel creature token
7. Repeat steps 3-6

Results

• Infinite card draw
• Infinite Clue tokens
• Infinite colored mana
• Infinite death triggers
• Infinite draw triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite self-mill
• Infinite surveil