Yenna, Redtooth Regent + Angelic Renewal + Ashnod's Altar + Concordant Crossroads

Yenna, Redtooth Regent

Angelic Renewal

Ashnod's Altar

Concordant Crossroads

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 delightful loop uses Yenna, Redtooth Regent to constantly flood the board with fresh enchantment copies of Angelic Renewal, which conveniently return Yenna to the battlefield the moment Ashnod's Altar converts her into a pair of mana. Because Concordant Crossroads grants all creatures haste, Yenna is immediately ready to tap and restart the entire process anew. The result is an endless engine of sacrifices and returns, generating infinite mana and triggers at will.