Yenna, Redtooth Regent + Angelic Renewal + Ashnod's Altar + Purphoros, Bronze-Blooded

Yenna, Redtooth Regent

Angelic Renewal

Ashnod's Altar

Purphoros, Bronze-Blooded

How it works

1. Activate Yenna by paying 2 and tapping it, creating a token copy of Angelic Renewal.
2. Activate Ashnod's Altar by sacrificing Yenna, adding CC.
3. When Yenna dies, both Angelic Renewals trigger.
4. Resolve the first trigger, choosing to sacrifice either Angelic Renewal and return Yenna from your graveyard to the battlefield.
5. Resolve the second trigger, choosing not to pay.
6. Repeat.

This brilliant loop relies on Yenna, Redtooth Regent duplicating Angelic Renewal to create a self-sustaining cycle of sacrifice and rebirth. By using Ashnod's Altar to sacrifice Yenna for mana, you trigger both Angelic Renewals in your graveyard, allowing one to resurrect Yenna while leaving the other ready for the next iteration. Meanwhile, Purphoros, Bronze-Blooded sits safely as an enchantment (assuming your red devotion is low) and watches the chaos unfold, though his presence doesn't directly fuel the loop itself.