Yenna, Redtooth Regent + Ashnod's Altar + Secret Arcade // Dusty Parlor + Great Oak Guardian

Yenna, Redtooth Regent

Ashnod's Altar

Secret Arcade // Dusty Parlor

Great Oak Guardian

How it works

1. Activate Yenna by paying 2 and tapping it, creating a token copy of Great Oak Guardian.
2. When the Great Oak Guardian token enters, it triggers, untapping all creatures you control and giving them +2/+2 until end of turn.
3. Activate Ashnod's Altar by sacrificing the Great Oak Guardian token, adding CC.
4. Repeat.

This clever loop turns a modest creature into an endless engine by leveraging the passive room of Secret Arcade // Dusty Parlor, which cleverly turns all your nonland permanents into enchantments. This transformation makes Great Oak Guardian a valid target for Yenna, Redtooth Regent, allowing her to repeatedly clone the Guardian for a mere two mana. Each time the token arrives, its enter-the-battlefield trigger untaps Yenna and your other creatures, while Ashnod's Altar stands ready to sacrifice the token to fuel the next iteration with surplus mana.