>>96309965
>Are these Final Fantasy through the ages cards just new art on some classic evergreen magic cards?
Not quite, there are no evergreen cards for standard. Except basic lands, I guess.
>If so does it mean that in 3 years those will be the only legal FF cards for standard play?
No, they're simply alt art and don't affect legality. Any card that isn't standard legal (like pic related) didn't get added to standard. Same with Azusa, she's already not in standard.

>>95933494
Never played FF6 but there’s something about it that has made me build all three of the Terras and Grixis Kefka, even taking apart my cEDH Tivit list for the Urza Terra (expensive counterspells, One Ring, Rhystic) and Kefka (Bowmasters and DMU Sheoldred). Least satisfied with the precon Terra though, still haven’t tweaked it to my liking.

>>95865440
I didn’t get Amano Esper Terra, but I did get Amano Urza Terra and Amano Kefka, and nearly everything else I was looking to grab, so I can’t be too upset. Still need to pick up the FF6 precon since my LGS was out of stock on them.