Nahiri's Resolve + Skittering Precursor + Sword of the Meek + Umbral Collar Zealot

RWB identity

Commander legal

The 4 combo pieces

• Nahiri's Resolve
• Skittering Precursor
• Sword of the Meek
• Umbral Collar Zealot

How to execute it

1. Activate Umbral Collar Zealot by sacrificing Sword of the Meek.
2. Skittering Precursor triggers, creating a 0/1 Eldrazi Spawn creature token.
3. When the Eldrazi Spawn enters the battlefield as a 1/1 due to Nahiri's Resolve, Sword of the Meek triggers, returning Sword of the Meek from your graveyard to the battlefield attached to the Eldrazi Spawn.
4. Resolve the Umbral Collar Zealot ability
5. Repeat.

What the combo produces

• Infinite colorless mana
• Infinite creature LTB
• Infinite creature tokens with haste
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite surveil