Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Ravenous Intruder, and Threefold Thunderhulk

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Ravenous Intruder on the battlefield
• Threefold Thunderhulk on the battlefield

Steps

1. Activate Ravenous Intruder by sacrificing Threefold Thunderhulk
2. When Threefold Thunderhulk 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 Ravenous Intruder ability
4. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite creature tokens
• Infinite death triggers
• Infinite sacrifice triggers
• Infinitely large creature until end of turn