Chthonian Nightmare + Pitiless Plunderer + Wriggling Grub + Yahenni, Undying Partisan
Chthonian Nightmare
Enchantment
Pitiless Plunderer
Creature — Human Pirate
Wriggling Grub
Creature — Worm
Yahenni, Undying Partisan
Legendary Creature — Aetherborn Vampire
Result
- Infinite artifact ETB
- Infinite artifact LTB
- Infinite artifact sacrifice triggers
- Infinite artifact tokens
- Infinite creature LTB
- Infinite creature ETB
- Infinite creature sacrifice triggers
- Infinite death triggers
- Infinite storm count
- Infinite creature tokens
- Infinite energy counters
- Infinite colored mana
- Infinite Treasure tokens
Combo data from Commander Spellbook.