Kaya's Ghostform, Goblin Bombardment, and Sun Titan

Prerequisites

• Kaya's Ghostform on the battlefield
• Goblin Bombardment on the battlefield
• Sun Titan on the battlefield

Steps

1. Activate Goblin Bombardment by sacrificing Sun Titan
2. When Sun Titan dies, Kaya's Ghostform triggers, returning Sun Titan from your graveyard to the battlefield
3. When Sun Titan enters, it triggers, returning Kaya's Ghostform from your graveyard to the battlefield attached to Sun Titan Resolve the Goblin Bombardment ability
4. Repeat

Results

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