Necroduality + Rot Hulk + Ashnod's Altar

Prerequisites

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Steps

1. 1Cast Rot Hulk by paying .
2. 2When Rot Hulk enters, it and Necroduality trigger.
3. 3Holding priority, activate Ashnod's Altar by sacrificing Rot Hulk.
4. 4Resolve the Rot Hulk trigger, failing to return anything to the battlefield.
5. 5Resolve the Necroduality trigger, creating a token copy of Rot Hulk.
6. 6When the token Rot Hulk enters, it triggers, returning Rot Hulk from your graveyard to the battlefield.
7. 7Repeat from step 2.

Effects

• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Return some creature cards from your graveyard to the battlefield