My main gripes with Prismari Artistry are that the mana base feels a little high, likely to make the most of Rootha's ability, so I've found myself almost downgrading the deck with some cheaper spells to stay relevant in the game during earlier turns
While this card will be an auto-include in my Sakashima the Impostor Commander deck, I'm also excited to see it played in Zendikar Rising Limited, where it potentially ends up as a dual-class party member, a copy of a massive creature you already control, or even a land drop when you really need it
Raw power counts, value counts, uniqueness counts - and so does being cool
My only beef with The Capitoline Triad is most colorless Commander decks are running lots of Eldrazi as their top-end, and those are traditionally creatures with huge power and toughness already
While flicker decks have historically been better for adding blue, its now increasingly possible to get away without doing so