Gravecrawler, Pitiless Plunderer, and Carrion Feeder

Prerequisites

• Gravecrawler on the battlefield
• Pitiless Plunderer on the battlefield
• Carrion Feeder on the battlefield

Steps

1. Activate Carrion Feeder by sacrificing Gravecrawler
2. Gravecrawler dies, triggering Pitiless Plunderer, creating a Treasure token
3. Resolve the Carrion Feeder ability, putting a +1/+1 counter on it
4. Activate the Treasure token by tapping and sacrificing it, adding
5. Cast Gravecrawler from your graveyard by paying
6. Repeat

Results

• Infinite +1/+1 counters on Carrion Feeder
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count