Ratadrabik of Urborg, Leyline of Singularity, and Accursed Centaur

Prerequisites

• Ratadrabik of Urborg on the battlefield
• Leyline of Singularity on the battlefield
• Accursed Centaur in hand
• available

Steps

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

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite death triggers
• Infinite creature sacrifice triggers