Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Umbral Collar Zealot + X-23, Deadly Weapon

WBG identity

Commander legal

The 3 combo pieces

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
• Umbral Collar Zealot
• X-23, Deadly Weapon

How to execute it

1. Activate Umbral Collar Zealot by sacrificing the other Mutant.
2. When the Mutant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When the Mutant enters, X-23 triggers, putting a +1/+1 counter on X-23 and the other Mutant.
4. Resolve the Umbral Collar Zealot ability.
5. Repeat.

What the combo produces

• Infinite +1/+1 counters on a creature
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite surveil