Mine is definitely Hua Tuo, Honored Physician. I love decks with consistent value engines, and he’s an interesting commander with less than 150 decks on scryfall.
https://www.moxfield.com/decks/sR6Q8QgAuUyp7FfLG5cqPA
Note: I tend to build budget decks because I am a poor student with a lot of debt, though the only expensive upgrades I can think of would be cards like Apex Devastator .
Sideboard is filled with cards that I haven previously had in the deck. Felt that pipers like howlpack piper and Champion of Rhonas are clunky because I generally want to be casting creatures from the top of my deck, not from my hand.
Yisan used to be very popular as a mono green toolbox commander, using his ability to be able to search out the exact creature you need for different situations before eventually trying to combo, usually trying to get infinite mana with Temur Sabertooth, a card like Great-oak guardian, and enough mana dorks to go mana positive before tutoring out the rest of your creatures with Yisan. He’s definitely a unique commander, and I agree that the secret lair art is sick
Had no idea he was so popular before! I’m fairly new to commander, so just having fun building decks around art I like(Mimeoplasm) or card types I enjoy(yetis!).