Naru Meha, Master Wizard, Black Sun's Twilight, and Goblin Bombardment

Prerequisites

• Naru Meha, Master Wizard in hand
• Black Sun's Twilight in hand
• Goblin Bombardment on the battlefield
• available

Steps

1. Cast Black Sun's Twilight by paying , optionally choosing to target a creature
2. Holding priority, cast Naru Meha by paying
3. When Naru Meha enters the battlefield, it triggers, copying Black Sun's Twilight, optionally choosing to target a creature
4. Holding priority, activate Goblin Bombardment by sacrificing Naru Meha, dealing 1 damage to any target
5. Resolve the copy of Black Sun's Twilight, giving up to one creature -5/-5 until end of turn and returning Naru Meha from your graveyard to the battlefield
6. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite damage
• Infinite magecraft triggers
• Reduce any number of target creatures' toughness to zero