Ratadrabik of Urborg, Leyline of Singularity, and Rot-Tide Gargantua

Prerequisites

• Ratadrabik of Urborg on the battlefield
• Leyline of Singularity on the battlefield
• Rot-Tide Gargantua in hand
• available

Steps

1. Cast Rot-Tide Gargantua by paying its mana cost
2. When Rot-Tide Gargantua enters, its exploit ability triggers, causing you to sacrifice it
3. When Rot-Tide Gargantua dies, its second ability and Ratadrabik trigger
4. Resolve the Rot-Tide Gargantua trigger, causing each opponent to sacrifice a creature
5. Resolve the Ratadrabik trigger, creating a token copy of Rot-Tide Gargantua that is a 2/2 legendary Zombie in addition to its other types
6. Repeat from step 2 using the Rot-Tide Gargantua token instead

Results

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