Tenacious Dead, Pitiless Plunderer, Altar of Dementia, and Magus of the Bridge

Prerequisites

• Tenacious Dead on the battlefield
• Pitiless Plunderer on the battlefield
• Altar of Dementia on the battlefield
• Magus of the Bridge on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Tenacious Dead
2. When Tenacious Dead dies, it, Magus of the Bridge, and Pitiless Plunderer trigger
3. Resolve the Pitiless Plunderer trigger, creating a Treasure token
4. Resolve the Magus of the Bridge trigger, creating a creature token
5. In response to the remaining trigger, activate Altar of Dementia by sacrificing the creature token
6. When the creature token dies, Pitiless Plunderer triggers, creating a Treasure token
7. Resolve the Altar of Dementia ability from step 5
8. Activate two Treasure tokens by tapping and sacrificing them, adding
9. Resolve the Tenacious Dead trigger, paying to return it to the battlefield from your graveyard
10. Resolve the Altar of Dementia ability from step 1
11. Repeat

Results

• Infinite artifact LTB
• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill