Stalwart Successor, Ravenous Intruder, and Wingrattle Scarecrow

Prerequisites

• Stalwart Successor on the battlefield
• Ravenous Intruder on the battlefield
• Wingrattle Scarecrow on the battlefield

Steps

1. Activate Ravenous Intruder by sacrificing Wingrattle Scarecrow When Wingrattle Scarecrow dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
2. When Wingrattle Scarecrow enters, Stalwart Successor triggers, putting a +1/+1 counter on Wingrattle Scarecrow Resolve the Ravenous Intruder ability
3. Repeat

Results

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