Myr Retriever, Workshop Assistant, Ashnod's Altar, and Mycosynth Golem

Prerequisites

• Myr Retriever in the graveyard
• Workshop Assistant on the battlefield
• Ashnod's Altar on the battlefield
• Mycosynth Golem on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Workshop Assistant, adding
2. Workshop Assistant dies, returning Myr Retriever from your graveyard to your hand
3. Cast Myr Retriever by paying
4. Activate Ashnod's Altar by sacrificing Myr Retriever, adding
5. Myr Retriever dies, returning Workshop Assistant from your graveyard to your hand
6. Cast Workshop Assistant by paying at most
7. Repeat

Results

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