Ratadrabik of Urborg, Leyline of Singularity, and Dack's Duplicate

Prerequisites

• Ratadrabik of Urborg on the battlefield
• Leyline of Singularity on the battlefield
• Dack's Duplicate in hand
• available

Steps

1. Cast Dack's Duplicate by paying its mana cost
2. Choose to have it enter as a copy of Ratadrabik
3. Put Dack's Duplicate into your graveyard due to the legend rule
4. When Dack's Duplicate dies, Ratadrabik triggers, creating a token copy of Dack's Duplicate that is a copy of Ratadrabik but is a 2/2 Zombie in addition to its other types
5. Repeat from step 2 using the Dack's Duplicate token instead

Results

• Draw the game
• Infinite ETB
• Infinite LTB
• Infinite death triggers