Szarel, Genesis Shepherd, Animation Module, Sword of the Meek, Phantom Train, and Phyrexian Altar

Prerequisites

• Szarel, Genesis Shepherd on the battlefield
• Animation Module on the battlefield
• Sword of the Meek on the battlefield
• Phantom Train on the battlefield
• Phyrexian Altar on the battlefield
• available

Steps

1. Activate Phantom Train by sacrificing Sword of the Meek
2. When you sacrifice Sword of the Meek, Szarel triggers, putting a number of +1/+1 counters on another creature you control
3. Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token
4. When the Servo enters the battlefield, Sword of the Meek triggers, returning itself from your graveyard to the battlefield attached to the Servo
5. Resolve the Phantom Train ability
6. Activate Phyrexian Altar by sacrificing the Servo, adding
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite +1/+1 counters