Persistent Constrictor + Stalwart Successor + Umbral Collar Zealot

BG identity

Commander legal

The 3 combo pieces

• Persistent Constrictor
• Stalwart Successor
• Umbral Collar Zealot

How to execute it

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

What the combo produces

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