Professor Hojo sets you up for powerful plays with equipment, but you can turn it into a reliable card draw engine with cards like Elvish Herder and Rhonas the Indomitable to draw a card for each turn
Digging deeper, there are a lot of cool commanders to helm more niche decks if that's your speed
More than anything, I'm keen to see all the Final Fantasy characters included in the MTG crossover, to feel those cards again, delight in the detailed art and complex terminology that I'll pretend I understand, and use it as a gateway into delving deeper into the TCG
Being an assassin itself, you can focus on them as part of your outlaw crew, especially given how many are evasive or have their own saboteur effects
Even if you do manage to sell a deck, you are going to be hard-pressed to make more than $10 or $20 extra on it