Summon Board Passive selections:
Odin choose 4 / 6 / 7
Bahamut choose 3 / 4 / 6
Usuals:
Ifrit, Shiva, Ramuh, Brothers 4 / 5 / 7
Leviathan, Pandemonium, Diabolos, Alexander 4 / 5 / 6
For more details and help with summons, check Summon Hub!
Frequent Runner: Alphinaud Leveilleur
A Sphere - Focus on buffing ATK! ATK ATK ATK!
C Sphere - Pecil for the Encouragement armor interaction or boost his/party's ATK with Garnet, Maria, LLyud or his own.
D Sphere - MORE ATK!
Free EX at Quest Start that's instant turn rate? Yes please! Push it and follow up with LD to get the Poisons flowing
What button's you press depends on what you want
Is EX up? Use it
Is EX about to be up and you want to battery? Use S1
Do you need some healing? Use S2
Is LD buff or debuff about to fall off? Use LD
Use Sic++ for filler damage or Shining Obsidian++
His kit offers good damage on turn with a decent HP poison for the time alongside his normal poison to keep party mostly safe from enemy attacks with a small emergency heal with his S2 if need be. Being unbreakable makes party safe from breaks keeping turn order pretty consistent and avoiding awkward enemy brv gains/mechanics they would otherwise get from breaking a member.
All You Need to Know Series by Theologica