Summon Board Passive selections:
Odin choose 4 / 6 / 7
Bahamut choose 3 / 4 or 5 or 6
Ifrit, Shiva, Ramuh, Brothers 4 / 5 / 7
Leviathan, Pandemonium, Diabolos, Alexander 4 / 5 / 6
For more details and help with summons, check Summon Hub!
A Spheres - ATK and BRV DMG spheres for EX and S2.
C Spheres - Iris, Alphinaud, Maria or Llyud spheres for party ATK/iBRV. Nabaat/Garnet for selfish ATK.
D Spheres - Any party ATK boosting sphere works, ATK + mBRV boosts if you have spares.
What makes her stand out is her LD and personal Follow-up dealing uncapped damage (999,999 per HP attack 3x + 1x) which is as strong as Enna Kros' EX without the RNG.
Note being uncapped means Quina/Setzer will not boost this damage and it's entirely up to the team to boost her HP DMG & Limit
For Crystal Quests, she is the first FR/BT Black Crystal character to FR gauge charge. This may help some feel more comfortable approaching fights despite many Black Crystal users ignoring mechanics and having ridiculous safety without needing to worry about enemy turns or FR already.
If Auron doesn't have D4 or D6, Leonora + Cait Sith/Alisaie LDCA can help Auron eat big hits and heal above last stand range.
There is a meme strategy with Maria FR to start where units that HP drain can raise the FR Bonus a ton in 1 move HOWEVER, in practice this means bringing Maria FR and the current options of units that HP drain are so outdated or don't drain enough & consitently enough that the strategy has trouble finishing out fights.