Deathrender + Heirloom Blade + Ashnod's Altar + Sin, Unending Cataclysm

Prerequisites

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Steps

1. 1Activate Ashnod's Altar by sacrificing Sin, adding .
2. 2When Sin dies, it, Heirloom Blade and Deathrender trigger.
3. 3Resolve the Sin trigger, shuffling it into your library.
4. 4Resolve the Heirloom Blade trigger, causing you to reveal cards from the top of your library until you reveal a creature that shares a card type with Sin and put it into your hand
5. 5Resolve the Deathrender trigger, putting the creature from your hand onto the battlefield and attaching Deathrender to it.
6. 6Activate Heirloom Blade's equip ability by paying , attaching it to the creature.
7. 7Repeat.

Effects

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