Cathodion + Havengul Lich + Phyrexian Altar

UB identity

Commander legal

The 3 combo pieces

• Cathodion
• Havengul Lich
• Phyrexian Altar

How to execute it

1. Activate Phyrexian Altar by sacrificing Cathodion, adding one mana of any color.
2. Cathodion triggers, adding {C}{C}{C}.
3. Activate Havengul Lich by paying {1}, targeting Cathodion.
4. Cast Cathodion from graveyard by paying {3}.
5. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite storm count