Ratadrabik of Urborg, Leyline of Singularity, and Fleshbag Marauder

Prerequisites

• Ratadrabik of Urborg on the battlefield
• Leyline of Singularity on the battlefield
• Fleshbag Marauder in hand
• available

Steps

1. Cast Fleshbag Marauder by paying its mana cost
2. When Fleshbag Marauder enters, it triggers, causing you to sacrifice it
3. When Fleshbag Marauder dies, Ratadrabik triggers, creating a token copy of Fleshbag Marauder that is a 2/2 legendary Zombie in addition to its other types
4. Repeat from step 2 using the Fleshbag Marauder token instead

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite death triggers
• Infinite creature sacrifice triggers
• Each opponent sacrifices all creatures they control