With the release of Aetherdrift, Wizards of the Coast has answered these questions and many more, pitting fan-favorite characters against each other in a giant race full of planes, trains, and automobiles
Shaun & Rebecca, Agents + The Animus The Animus is kind of good as a piece of focused graveyard hate that also yoinks things for your own use
Inner Demon is a sweet one, but only giving -2/-2 to non-Demons is probably a bit too niche to be consistently useful, though it can sometimes clear out Token 1/1 armies before they get buffed
Many cards break into the 3-figures if they're not printed enough, like Power Artifact, and its not uncommon to get into 4, 5, and even 6-figure price ranges for the ultra-rare
Custom Magic cards arent just for fun
For start, it has three keywords in Vigilance, Reach, and Trample, allowing you to attack and defend every turn alongside blocking opposing Flying creatures