Ratadrabik of Urborg, Leyline of Singularity, and Catalyst Elemental

Prerequisites

• Ratadrabik of Urborg on the battlefield
• Leyline of Singularity on the battlefield
• Catalyst Elemental on the battlefield

Steps

1. Activate Catalyst Elemental by sacrificing it
2. When Catalyst Elemental dies, Ratadrabik triggers, creating a token copy of Catalyst Elemental that is a 2/2 legendary Zombie in addition to its other types
3. Repeat using the Catalyst Elemental token

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite red mana
• Infinite sacrifice triggers