Goblin Welder, Thornbite Staff, and Myr Battlesphere

Prerequisites

• Goblin Welder on the battlefield
• Thornbite Staff on the battlefield
• Myr Battlesphere in the graveyard
• Thornbite Staff attached to Goblin Welder
• You control a nontoken artifact creature
• Goblin Welder does not have summoning sickness

Steps

1. Tap Goblin Welder, targeting the artifact creature on the battlefield and Myr Battlesphere in your graveyard
2. The artifact creature is sacrificed and Myr Battlesphere enters the battlefield
3. Goblin Welder triggers, untapping itself
4. Myr Battlesphere triggers
5. creating 4 Myr creature tokens
6. Activate Goblin Welder again, targeting the artifact creature in your graveyard and Myr Battlesphere on the battlefield
7. The artifact creature returns to the battlefield and Myr Battlesphere is sacrificed
8. Goblin Welder triggers, untapping itself
9. Repeat for infinite creature tokens

Results

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