Stalwart Successor, Wingrattle Scarecrow, and Carrion Feeder

Prerequisites

• Stalwart Successor on the battlefield
• Wingrattle Scarecrow on the battlefield
• Carrion Feeder on the battlefield

Steps

1. Activate Carrion Feeder 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 Carrion Feeder ability
3. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers