Combine that with an easy mana cost and the ability to choose whatever other color you want to find combos, and everything you could ever want in a Partner is right here
He theorized that channeling a kami spirit into a mech would allow its pilot to synchronize better with the machine, resulting in greatly improved control and firepower
Requires a pretty specific curve/hand to work out
Its not unreasonable to think you might just draw twenty cards, right there, and if your deck contains a very unusual amount of mana, you might not be far from drawing your whole deck (especially if youve got a couple of Dakmor Salvages somewhere in the mix, making it completely deterministic that you mill your deck, fill the battlefield, and set up some graveyard kill)
So go ahead, turn your whole board into Villains and let Mysterio do his thing