Eloise, Nephalia Sleuth, Ulvenwald Mysteries, and Ashnod's Altar

Prerequisites

• Eloise, Nephalia Sleuth on the battlefield
• Ulvenwald Mysteries on the battlefield
• Ashnod's Altar on the battlefield
• You control a Clue
• available

Steps

1. Activate the Clue by paying and sacrificing it
2. Eloise's and Ulvenwald Mysteries' second abilities trigger
3. Resolve the Eloise trigger, causing you to surveil 1
4. Resolve the Ulvenwald Mysteries trigger, creating a 1/1 Human Soldier creature token
5. Resolve the Clue ability from step 1, causing you to draw a card
6. Activate Ashnod's Altar by sacrificing the Human Soldier, adding
7. Eloise's first and second abilities trigger
8. Resolve Eloise's first trigger, causing you to investigate
9. Resolve Eloise's second trigger, causing you to surveil 1
10. Repeat

Results

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