Sun Titan, Shade's Form, and Hammerhead, Maggia Boss

Prerequisites

• Sun Titan on the battlefield
• Shade's Form on the battlefield
• Hammerhead, Maggia Boss on the battlefield

Steps

1. Activate Hammerhead by sacrificing Sun Titan
2. When Sun Titan dies, Shade's Form triggers, returning Sun Titan from your graveyard to the battlefield
3. When Sun Titan enters, it triggers, returning Shade's Form from your graveyard to the battlefield attached to Sun Titan
4. Resolve the Hammerhead ability
5. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers