Enduring Renewal + Ashnod's Altar + Intruder Alarm

Enduring Renewal

Ashnod's Altar

Intruder Alarm

How it works

1. Activate Ashnod's Altar by sacrificing the creature, adding CC.
2. When the creature dies, Enduring Renewal triggers, returning the creature from your graveyard to your hand.
3. Cast the creature by paying its mana cost.
4. Repeat.
5. If the creature can be cast using C or less, this combo nets infinite colorless mana.
6. Activate all mana-producing creatures you control by tapping them, adding at least 1.
7. Cast the creature card by paying its mana cost.
8. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
9. Activate Ashnod's Altar by sacrificing the creature, adding CC.
10. When the creature dies, Enduring Renewal triggers, returning the creature to your hand from your graveyard.
11. Repeat.

This intricate loop relies on Enduring Renewal's passive replacement of your draws and its ability to rescue dying creatures straight back to your hand, bypassing the graveyard entirely. You use Ashnod's Altar to sacrifice a cheap creature for colorless mana, which immediately triggers Enduring Renewal to return that creature to your hand so you can recast it. Meanwhile, Intruder Alarm watches the battlefield and untaps your entire board whenever that creature enters, letting you tap your other creatures for extra mana along the way.