Not fun for everyone, warping the format, broken beyond repair, etc
Riders of the Mark is a powerful swing, and it reminds me of Thopter Assembly, sort of
With the help of Death's Oasis and Luminous Broodmoth, this allows for some absurdly powerful value loops
Admittedly, most of them are on the Commander banlist, but there's still great stuff that you can tutor with Artificer's Intuition, from utility equipment like Shadowspear, to combo pieces like Lion's Eye Diamond or Walking Ballista
In Magic: The Gathering , characters often ascend to powers they once thought unimaginable
Control / Own When the Magic rules refer to the controller of a card or other object, it means what you would expect: the player who currently has that object on their side of the battlefield, who is responsible for deciding how and when to use it