Ashnod's Altar + Chorus of the Conclave + Mortuary + Primeval Spawn

WUBRG identity

Commander legal

The 4 combo pieces

• Ashnod's Altar
• Chorus of the Conclave
• Mortuary
• Primeval Spawn

How to execute it

1. Activate Ashnod's Altar by sacrificing Primeval Spawn, adding {C}{C}.
2. When Primeval Spawn dies, its second ability and Mortuary trigger.
3. Resolve the Mortuary trigger, putting Primeval Spawn on top of your library from your graveyard.
4. Resolve the Primeval Spawn trigger, exiling the top ten cards of your library, and casting Primeval Spawn by paying a total of {1} due to Chorus of the Conclave.
5. Repeat.

What the combo produces

• Exile your library
• Infinite +1/+1 counters on a creature
• Infinite colorless mana
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite storm count