Slobad, Iron Goblin, Thornbite Staff, Myr Retriever, and Workshop Assistant

Prerequisites

• Slobad, Iron Goblin on the battlefield
• Thornbite Staff on the battlefield
• Myr Retriever in the graveyard
• Workshop Assistant on the battlefield
• Slobad does not have summoning sickness
• Thornbite Staff attached to Slobad

Steps

1. Activate Slobad by tapping it and sacrificing Workshop Assistant, adding that can only be spent to activate abilities of artifacts or to cast artifact spells
2. Workshop Assistant dies, triggering itself and Slobad
3. Resolve the Workshop Assistant trigger, returning Myr Retriever from your graveyard to your hand
4. Resolve the Slobad trigger, untapping it
5. Cast Myr Retriever by paying
6. Activate Slobad by tapping it and sacrificing Myr Retriever, adding that can only be spent to activate abilities of artifacts or to cast artifact spells
7. Myr Retriever dies, triggering itself and Slobad
8. Resolve the Myr Retriever trigger, returning Workshop Assistant from your graveyard to your hand
9. Resolve the Slobad trigger, untapping it
10. Cast Workshop Assistant by paying
11. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count