Carnage, Crimson Chaos + Loyal Retainers + Phyrexian Altar

RWB identity

Commander legal

The 3 combo pieces

• Carnage, Crimson Chaos
• Loyal Retainers
• Phyrexian Altar

How to execute it

1. Cast Carnage by paying {2}{B}{R}.
2. When Carnage enters, it triggers, returning Loyal Retainers from your graveyard to the battlefield.
3. Activate Phyrexian Altar by sacrificing Carnage.
4. Activate Loyal Retainers by sacrificing it, returning Carnage from your graveyard to the battlefield.
5. Repeat from step 2.

What the combo produces

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