Using green means we arent tied to our Commander for mana acceleration so much, and if you kill Henzie well, he just comes back stronger, with a greater cost reduction
On its own, the clean, almost comic-book-esque style of this card is already a massive draw
Mishra's Factory makes it so you can only spend that mana on Artifacts but, in an Artifact deck, this is insanely strong
While each mode is good on its own, Akromas Will definitely shines brightest when you have your commander and can gain access to both
I still to this day have books from that period where Im listing out Magic decks I want to make, or Im working on my own ideas for trading card games. A Warhammer 40K trading card game that Miller co-designed in 2001 with Luke Peterschmidt has roots in that era