Ygra, Eater of All, Experimental Confectioner, and Carrion Feeder

Prerequisites

• Ygra, Eater of All on the battlefield
• Experimental Confectioner on the battlefield
• Carrion Feeder on the battlefield

Steps

1. Activate Carrion Feeder by sacrificing another creature
2. When the creature dies as a Food due to Ygra, Experimental Confectioner's second ability triggers, causing you to create a 1/1 Rat creature token
3. Resolve the Carrion Feeder ability, putting a +1/+1 counter on it
4. Repeat

Results

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