Koll, the Forgemaster + Goblin Bombardment + Lightning Greaves + Rograkh, Son of Rohgahh

Koll, the Forgemaster
Goblin Bombardment
Lightning Greaves
Rograkh, Son of Rohgahh

Requires
All permanents on the battlefield.
Steps
  1. Equip Rograkh with Lightning Greaves
  2. Sacrifice Rograkh to Goblin Bombardment to deal 1 damage to any target
  3. Koll triggers, returning Rograkh to you hand
  4. Cast Rograkh
  5. Repeat
Results
Infinite ETB. Infinite LTB. Infinite death triggers. Infinite damage. Infinite storm count. Infinite sacrifice triggers.