Ygra, Eater of All, Experimental Confectioner, and Phantom Train

Prerequisites

• Ygra, Eater of All on the battlefield
• Experimental Confectioner on the battlefield
• Phantom Train on the battlefield

Steps

1. Activate Phantom Train by sacrificing another creature
2. When the creature dies as a Food due to Ygra, Experimental Confectioner's second ability and Ygra trigger
3. Resolve the Experimental Confectioner trigger, causing you to create a 1/1 Rat creature token
4. Resolve the Ygra trigger, putting two +1/+1 counters on it
5. Resolve the Phantom Train ability Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite +1/+1 counters on Ygra
• Infinite +1/+1 counters on a creature