Stalwart Successor, Goblin Bombardment, and Lesser Masticore

Prerequisites

• Stalwart Successor on the battlefield
• Goblin Bombardment on the battlefield
• Lesser Masticore on the battlefield

Steps

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

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite damage
• Infinite death triggers
• Infinite creature sacrifice triggers