Ratadrabik of Urborg + Leyline of Singularity + Rot-Tide Gargantua

Prerequisites

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Steps

1. 1Cast Rot-Tide Gargantua by paying its mana cost.
2. 2When Rot-Tide Gargantua enters, its exploit ability triggers, causing you to sacrifice it.
3. 3When Rot-Tide Gargantua dies, its second ability and Ratadrabik trigger.
4. 4Resolve the Rot-Tide Gargantua trigger, causing each opponent to sacrifice a creature.
5. 5Resolve 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. 6Repeat from step 2 using the Rot-Tide Gargantua token instead.

Effects

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