Scrap Trawler + Myr Retriever + Ashnod's Altar + Cloud Key

Prerequisites

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Steps

1. 1Activate Ashnod's Altar by sacrificing Myr Retriever, adding .
2. 2When Myr Retriever dies, it triggers, returning Scrap Trawler from your graveyard to your hand.
3. 3Cast Scrap Trawler by paying its mana cost, which is reduced by Cloud Key.
4. 4Activate Ashnod's Altar by sacrificing Scrap Trawler, adding .
5. 5When Scrap Trawler dies, it triggers, returning Myr Retriever from your graveyard to your hand.
6. 6Cast Myr Retriever by paying its mana cost, which is reduced by Cloud Key.
7. 7Repeat.

Effects

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