In the end, we decided against having a unifying "hero" mechanic
The four decks to look out for are as follows: Final Fantasy 6: Revival Trance (Red/White/Black) Final Fantasy 7: Limit Break (Red/White/Green) Final Fantasy 10: Counter Blitz (Blue/White/Green) Final Fantasy 11: Scions of Spellcraft (White, Blue, Black) The Final Fantasy 6 deck is led by Terra, Herald of Hope, while Limit Break is commanded by Cloud, Ex-Soldier from Final Fantasy 7
If she isn't your commander, you can play her in decks that lean into the counters theme, like those led by Atraxa, Praetors' VoiceAtraxa, Praetors' Voice or Tidus, Yuna's GuardianTidus, Yuna's Guardian
This shows that Magic is dedicated to capturing the essence of the source material for its Final Fantasy set, which is also apparent on Celes' card