Animation Module, Mana Echoes, and Railway Brawler

Prerequisites

• Animation Module on the battlefield
• Mana Echoes on the battlefield
• Railway Brawler on the battlefield
• You have a way to put a +1/+1 counter on a creature you control
• available

Steps

1. Put a +1/+1 counter on any creature you control
2. Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token
3. The Servo enters the battlefield, triggering Mana Echoes and Railway Brawler Resolve the Mana Echoes trigger, adding at least
4. Resolve the Railway Brawler trigger, putting a +1/+1 on the Servo
5. Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token
6. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite creature tokens