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
The FF10 commander deck centers around the hero Tidus and is all about creating loads +1/+1 counters on your creatures which you can then shift around
Both of these cards are on the Game Changers list, further cementing their power in that format
Card Kingdom was paying around $600 for near mint copies of the card
Riders of the Mark is a powerful swing, and it reminds me of Thopter Assembly, sort of
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