Not much more is known at this time, but Final Fantasys rich history is full of places to draw inspiration from
Constantly dealing instants and sorceries not only provides you with a great opportunity to buff Vivi with +1/+1 counters (and chip away at your opponents health total), but also provides you a boost to your mana pool meaning you can afford to cast even more spells
Against certain decks like aggro with no hand this has free-board-wipe written all over it
The ability of MJ, Rising Star triggers just once for each life-gaining event, regardless of how much life is gained
If you can stay on the board with a Runaway Steam-Kiln, Flare of Duplication, and a Storm-Kiln Artist things can get hectic fast
Indeed another Sphinx of the Consecrated variety this time is very much the way to go if you want value and snowballing power