Putrid Goblin + Metallic Mimic + Goblin Trashmaster

Prerequisites

• There's an artifact on the battlefield.

Steps

1. 1Activate Goblin Trashmaster by sacrificing Putrid Goblin.
2. 2When Putrid Goblin dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Metallic Mimic.
3. 3Resolve the Goblin Trashmaster ability.
4. 4Repeat.

Effects

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers