Cathars' Crusade + Putrid Goblin + Sling-Gang Lieutenant

WB identity

Commander legal

The 3 combo pieces

• Cathars' Crusade
• Putrid Goblin
• Sling-Gang Lieutenant

How to execute it

1. Activate Sling-Gang Lieutenant by sacrificing Putrid Goblin
2. When Putrid Goblin dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Putrid Goblin enters, Cathars' Crusade triggers, putting a +1/+1 counter on each creature you control.
4. Resolve the Sling-Gang Lieutenant ability.
5. Repeat.

What the combo produces

• Infinite +1/+1 counters on most creatures you control
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite sacrifice triggers