It's been a busy year for card games
Red, white, blue, and colorless all have about the same number of cards, while green has about half that number, and black halves it once again
As horsemanship was an ability exclusive to Portal Three Kingdoms and effectively makes a creature with the ability unblockable, one way to get the most mileage out of this Commander would be to build a mono-green "Voltron" deck around it
Powerbalance checks off all the relevant boxes for me: its a callback to an awesome card from years past, it forces interaction (in other words, makes me have to pay attention to the game), it gives you free stuff, and it allows for fun top-deck manipulation
They also work wonders with cards like Ephemerate and Undying Evil, allowing you to get multiple enter effects and keep the creature