This list is certainly intriguing and I'm tempted to try it myself
The Black Mage essentially gets a tweaked version of a core Vivi ability: he deals one damage to each opponent whenever you cast a noncreature spell, or three damage with a full party
Suffice to say I'm drawing lots of cards and getting lots of mana quickly
Because you can set up threats easily, they fall into the same suite of backbreaking spells like Obliterate, Decree of Annihilation, Tectonic Break, and Apocalypse
On the floor, it provides some card draw each turn, similarly to Phyrexian Arena, though youll want to be playing a fair number of creatures in the deck to be able to choose a Ring-bearer
Their gold design is purely cosmetic