Leonardo, Sewer Samurai, Tatterkite, Phantom Train, and Hamza, Guardian of Arashin

Prerequisites

• Leonardo, Sewer Samurai on the battlefield
• Tatterkite in the graveyard
• Phantom Train on the battlefield
• Hamza, Guardian of Arashin on the battlefield

Steps

1. Cast Tatterkite from your graveyard by paying due to Hamza
2. It won't enter with a finality counter on it due to its static ability
3. Activate Phantom Train by sacrificing Tatterkite
4. Repeat

Results

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