Extraction Specialist + Phyrexian Altar + Saffi Eriksdotter

GW identity

Commander legal

The 3 combo pieces

• Extraction Specialist
• Phyrexian Altar
• Saffi Eriksdotter

How to execute it

1. Activate Saffi by sacrificing it, targeting Extraction Specialist.
2. Activate Phyrexian Altar by sacrificing Extraction Specialist, adding one mana of any color.
3. When Extraction Specialist dies, Saffi triggers, returning Extraction Specialist from your graveyard to the battlefield.
4. When Extraction Specialist enters the battlefield, it triggers, returning Saffi from your graveyard to the battlefield.
5. Repeat.

What the combo produces

• Infinite colored mana
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers