Koll, the Forgemaster, Hero's Blade, Rograkh, Son of Rohgahh, and Goblin Bombardment

Prerequisites

• Koll, the Forgemaster on the battlefield
• Hero's Blade on the battlefield
• Rograkh, Son of Rohgahh on the battlefield
• Goblin Bombardment on the battlefield
• Hero's Blade attached to Rograkh

Steps

1. Activate Goblin Bombardment by sacrificing Rograkh
2. Rograkh dies, triggering Koll, returning Rograkh from your graveyard to your hand
3. Resolve the Goblin Bombardment ability, dealing 1 damage to any target
4. Cast Rograkh by paying
5. Rograkh enters the battlefield, triggering Hero's Blade, attaching Hero's Blade to Rograkh
6. Repeat

Results

• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count