Grumgully, the Generous + Kitchen Finks + Phyrexian Altar

RGW identity

Commander legal

The 3 combo pieces

• Grumgully, the Generous
• Kitchen Finks
• Phyrexian Altar

How to execute it

1. Activate Phyrexian Altar by sacrificing Kitchen Finks, adding one mana of any color.
2. Kitchen Finks' persist ability triggers, returning it to the battlefield with zero -1/-1 counters on it due to Grumgully.
3. Kitchen Finks entering the battlefield, causing you to gain two life.
4. Repeat.

What the combo produces

• Infinite colored mana
• Infinite death triggers
• Infinite lifegain
• Infinite lifegain triggers
• Infinite sacrifice triggers