Krark-Clan Ironworks, Mycosynth Golem, Junk Diver, and Myr Retriever

Prerequisites

• Krark-Clan Ironworks on the battlefield
• Mycosynth Golem on the battlefield
• Junk Diver in the graveyard
• Myr Retriever in hand

Steps

1. Pay to cast Myr Retriever
2. Activate Krark-Clan Ironworks by sacrificing Myr Retriever to add
3. Myr Retriever triggers, returning Junk Diver from your graveyard to your hand
4. Pay to cast Junk Diver
5. Activate Krark-Clan Ironworks by sacrificing Junk Diver to add
6. Junk Diver triggers, returning Myr Retriever from your graveyard to your hand
7. Repeat

Results

• Infinite colorless mana
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers