Ratadrabik of Urborg, Leyline of Singularity, and Whisperwood Elemental

Prerequisites

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

Steps

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

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Manifest your entire library
• Near-infinite ETB