Spectral Arcanist + Corpse Dance + Ashnod's Altar + Skirge Familiar

Prerequisites

• You control at least two additional Spirits.

Steps

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

Effects

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