The art is also gorgeous to me and Id be lying if that wasnt a little part of my consideration because I remember it so well
Yes, scene box cards are legal in Commander
Proliferate cards like Experimental Augury or Tezzeret's Gambit work exceptionally well with this commander
You have plenty of ways to build your decks, with them taking a ramp approach, big bad creatures, or through combat tricks
It's an expensive card, so we'll note some cheaper alternatives in a budget substitutions section
Shielded by Faith Unquestioned Authority Lavaspur Boosts Teferis Protection Flawless Maneuver Flare of Fortitude Unbreakable Formation Contractual Safeguard Conquerers Flail Mana Production Mana rocks are as good as ever in this deck, but if you want to get truly explosive, there are several pieces of power-boosting Equipment here that double as ramp options