Animation Module, Mana Echoes, and Phantom Train

Prerequisites

• Animation Module on the battlefield
• Mana Echoes on the battlefield
• Phantom Train on the battlefield
• available

Steps

1. Activate Phantom Train by sacrificing another creature, putting a +1/+1 counter on Phantom Train and causing it to become a creature until end of turn
2. Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token
3. When the Servo enters the battlefield, Mana Echoes triggers, adding for each Servo on the battlefield
4. Repeat

Results

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