Halvar, God of Battle // Sword of the Realms, Pitiless Plunderer, Phyrexian Altar, and Ornithopter

Prerequisites

• Halvar, God of Battle // Sword of the Realms on the battlefield
• Pitiless Plunderer on the battlefield
• Phyrexian Altar on the battlefield
• Ornithopter on the battlefield
• Sword of the Realms attached to Ornithopter

Steps

1. Activate Phyrexian Altar by sacrificing Ornithopter, adding
2. When Ornithopter dies, Sword of the Realms and Pitiless Plunderer trigger
3. Resolve the Pitiless Plunderer trigger, creating a Treasure token
4. Resolve the Sword of the Realms trigger, returning Ornithopter to your hand from your graveyard
5. Cast Ornithopter by paying
6. Activate the Treasure by tapping and sacrificing it, adding
7. Activate Sword of the Realms' equip ability by paying , attaching it to Ornithopter
8. Repeat

Results

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