Colfenor, the Last Yew, Tempered Steel, Memnite, Ornithopter, and Blasting Station

Prerequisites

• Colfenor, the Last Yew on the battlefield
• Tempered Steel on the battlefield
• Memnite on the battlefield
• Ornithopter in the graveyard
• Blasting Station on the battlefield

Steps

1. Tap Blasting Station, sacrificing Memnite to deal 1 damage to any target
2. Colfenor triggers, returning Ornithopter from your graveyard to your hand
3. Cast Ornithopter
4. Ornithopter enters, triggering Blasting Station untapping it
5. Tap Blasting Station, sacrificing Ornithopter to deal 1 damage to any target
6. Colfenor triggers, returning Memnite from your graveyard to your hand
7. Cast Memnite
8. Memnite enters, triggering Blasting Station untapping it
9. Repeat

Results

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