If you want to consider Baral for your Cube, take a good look at the composition of your Cube's Blue control decks to see if they'd truly benefit from it, however, this likely won't be the case
they operate like Saga cards but are treated like creature cards in battle
Sarkhan, Dragonsoul is all about the endgame, with an ultimate that floods the board with dragons straight from your library
These are filled to the brim with effect-granting songs, as well as an army of characters that can quickly Shift onto the board and sing them for free (Cinderella's a typical culprit)
I dont know if casting this Sephiroth variant will be viable in Final Fantasy Limited, but know that doing so is well worth the effort
The reason Greaves is so high up this list is nothing to do with anything previously mentioned but that it sits so very well in the heavy artifact ramp decks