Altar of Dementia + Nether Traitor + Pitiless Plunderer + Sifter of Skulls
Altar of Dementia
Artifact
Nether Traitor
Creature — Spirit
Pitiless Plunderer
Creature — Human Pirate
Sifter of Skulls
Creature — Eldrazi
Result
- Infinite artifact ETB
- Infinite artifact LTB
- Infinite artifact sacrifice triggers
- Infinite artifact tokens
- Infinite colored mana
- Infinite colorless mana
- Infinite death triggers
- Infinite creature ETB
- Infinite creature LTB
- Infinite mill
- Infinite creature sacrifice triggers
- Infinite self-mill
- Infinite Treasure tokens
Combo data from Commander Spellbook.