Sword of the Meek, Animation Module, Krark-Clan Ironworks, and Phantom Train

Prerequisites

• Sword of the Meek on the battlefield
• Animation Module on the battlefield
• Krark-Clan Ironworks on the battlefield
• Phantom Train on the battlefield

Steps

1. Activate Krark-Clan Ironworks by sacrificing Sword of the Meek, adding
2. Activate Phantom Train by sacrificing another creature, putting a +1/+1 counter on it
3. Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token
4. When the Servo enters, Sword of the Meek triggers, returning itself from your graveyard to the battlefield attached to the Servo
5. Repeat

Results

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