Chaotic Goo + Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Umbral Collar Zealot

RWB identity

Commander legal

The 3 combo pieces

• Chaotic Goo
• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
• Umbral Collar Zealot

How to execute it

1. Activate Umbral Collar Zealot by sacrificing Chaotic Goo.
2. When Chaotic Goo dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to its replacement effect.
3. Resolve the Umbral Collar Zealot ability.
4. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite surveil