Spectral Arcanist, Corpse Dance, Ashnod's Altar, and Skirge Familiar

Prerequisites

• Spectral Arcanist on the battlefield
• Corpse Dance in hand
• Ashnod's Altar on the battlefield
• Skirge Familiar 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 Skirge Familiar by discarding Corpse Dance, adding
8. Repeat from step 3

Results

• Infinite black mana
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite self-discard triggers
• Infinite storm count