Ashnod's Altar, Corpse Dance, Mind Over Matter, and Spectral Arcanist

Prerequisites

• Ashnod's Altar on the battlefield
• Corpse Dance in hand
• Mind Over Matter on the battlefield
• Spectral Arcanist on the battlefield
• You control at least two additional Spirits
• available

Steps

1. Cast Corpse Dance by paying , returning Spectral Arcanist from your graveyard to the battlefield with haste
2. Spectral Arcanist enters the battlefield, triggering its ability
3. Holding priority, activate Ashnod's Altar by sacrificing Spectral Arcanist, adding
4. Resolve the Spectral Arcanist trigger, casting Corpse Dance from your graveyard with buyback by paying
5. Resolve Corpse Dance, returning Spectral Arcanist from your graveyard to the battlefield, and returning Corpse Dance to your hand
6. Spectral Arcanist enters the battlefield, triggering its ability
7. Holding priority, activate Mind over Matter by discarding Corpse Dance, untapping any applicable permanent
8. Repeat from step 3

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite mana permanents you control can produce
• Infinite sacrifice triggers
• Infinite self-discard triggers
• Infinite storm count
• Infinite untap of permanents you control