Polyraptor, and Forerunner of the Empire

Prerequisites

• Polyraptor in hand
• Forerunner of the Empire on the battlefield
• You have a way to give Forerunner of the Empire indestructible
• available

Steps

1. Give Forerunner of the Empire indestructible by any method
2. Cast Polyraptor by paying
3. Polyraptor enters the battlefield, triggering Forerunner of the Empire, causing it to deal 1 damage to each creature
4. All Polyraptor creatures trigger
5. Resolve one Polyraptor trigger, creating one token copy of Polyraptor
6. Repeat from step 3 any number of times
7. End the loop by declining to deal damage with Forerunner of the Empire triggers and resolving an arbitrarily high number of Polyraptor triggers

Results

• Infinite creature tokens
• Infinite damage to all creatures
• Infinite death triggers
• Infinite ETB
• Infinite LTB