Yenna, Redtooth Regent + Ashnod's Altar + Secret Arcade // Dusty Parlor + Village Bell-Ringer

Yenna, Redtooth Regent

Ashnod's Altar

Secret Arcade // Dusty Parlor

Village Bell-Ringer

How it works

1. Activate Yenna by paying 2 and tapping it, creating a token copy of Village Bell-Ringer.
2. When the Village Bell-Ringer token enters, it triggers, untapping all creatures you control.
3. Activate Ashnod's Altar by sacrificing the Village Bell-Ringer token, adding CC.
4. Repeat.

The magic here relies entirely on Secret Arcade // Dusty Parlor’s static ability, which generously bestows the enchantment type upon all nonland permanents you control, making the nonlegendary clone of Village Bell-Ringer created by Yenna, Redtooth Regent a valid target for Yenna's copying ability in the first place. Once you tap Yenna to copy the Bell-Ringer, the resulting token enters the battlefield and triggers its own ability to untap all your creatures—including Yenna herself. From there, you simply feed the Bell-Ringer token to Ashnod's Altar to generate the colorless mana needed to activate Yenna all over again, creating a self-sustaining loop that floods the board with infinite sacrifice and entry triggers.