I started MTG.Design back in 2014
Another subtly powerful card to include is Raiders' Karve, a common Vehicle that looks at the top card of your library when you attack, and if it's a land, puts it into play tapped
Lean into artifact tokensspecifically Treasure and Robot tokensto enable cheap plays and flashy turns
Arnos option to be cast facedown as a disguised creature is fine in an environment with other face down creatures, but it's basically useless if Arno's your Rakdos commander
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
At the time this was my first big card and the owner did a great job walking me through teaching me how to negotiate and get on my feet in the hobby