Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Shilgengar, Sire of Famine, and Spiteful Squad

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Spiteful Squad on the battlefield

Steps

1. Activate Shilgengar by sacrificing Spiteful Squad
2. When Spiteful Squad 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 Shilgengar ability
4. Repeat

Results

• Infinite +1/+1 counters on creatures you control
• Infinite Blood tokens
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite recursion of creatures you control
• Infinite sacrifice triggers