Ashnod's Altar, Corpse Dance, Pitiless Plunderer, and Spectral Arcanist

Prerequisites

• Ashnod's Altar on the battlefield
• Corpse Dance in hand
• Pitiless Plunderer on the battlefield
• Spectral Arcanist on the battlefield
• You control at least two additional Spirits

Steps

1. Activate Ashnod's Altar by sacrificing Spectral Arcanist, adding
2. Spectral Arcanist dies, triggering Pitiless Plunderer, creating a Treasure token
3. Activate the Treasure token by tapping and sacrificing it, adding
4. Cast Corpse Dance by paying , returning Spectral Arcanist from your graveyard to the battlefield with haste
5. Spectral Arcanist enters the battlefield, triggering its ability
6. Holding priority, activate Ashnod's Altar by sacrificing Spectral Arcanist, adding
7. Spectral Arcanist dies, triggering Pitiless Plunderer, creating a Treasure token
8. Resolve the Spectral Arcanist trigger, casting Corpse Dance from your graveyard with buyback by paying
9. Resolve Corpse Dance, returning Spectral Arcanist from your graveyard to the battlefield, and returning Corpse Dance to your hand
10. Spectral Arcanist enters the battlefield, allowing you to cast any instant or sorcery spell from your graveyard without paying its mana cost
11. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite storm count
• Infinite Treasure tokens