I'll put it this way, if Q played in a Pro Tour, it would pull any un-set card it wanted into play on a whim and then be the judge that rules in it's own favor
This means either using cards that create non-humans tokens or just curve out well with non-humans, which the deck tries to do both of
Adventures, introduced in 2019s Throne of Eldraine , let players cast sorceries and instants attached to permanent cards
Captain American, Team Leader is another tribal Commander, only for Heroes rather than Villains like Doctor Doom
While it is possible to just take three on-color abilities that have value and slap them onto a planeswalker, if you want an elegant design, you generally want abilities that play onto each other, feel like they click together
Like I said they add a lot of depth and nuance to the list, but since I'm upgrading for power they are simply not as strong as the main gameplan