JP Boss Guide by /u/Zurai001

Multiplayer Enemy AI by /u/TFMurphy

BOSS: Omniscient (V)

Difficulties: 160 (Ultimate ) and 220 (Apocalypse )

Mastery Conditions:

• Win with 4 or more party members alive.
• Reduce a Omniscient's RES.
• Reduce a Omniscient's MAG.

Overview:

• Omniscient doesn't have any elemental resistances, and he is weak to Fire-elemental attacks.
• Note that he begins the battle with Regen.
• All damage in this battle is magic. Omniscient mainly uses Ultimate: Flare/Firaga/Blizzaga/Thundaga - all of which are NAT and deals heavy Non-elemental/Fire/Ice/Lightning magic damage respectively. Other than that, he also has Slow and Graviga which deals 75% of max HP damage. Note that Ultimate: Firaga is single-target, Ultimate: Blizzaga and Thundaga are AoE, and all three generally applies Sap to your party.
• In his weaker phases, he has a counter Firaga/Blizzaga/Thundaga, and a standard Flare ability - same as above, but they are all BLK type.
• Hitting him with a physical attack causes him to use Rewind, which heals him to full and removes all debuffs.
• He has one status vulnerability: Berserk. If you Berserk him...
• ...he will use a single-target piercing Overflow 99999 damage physical attack that bypasses Physical Blink.

Tips:

• Pure mage meta for this. Stack as many magic buffs as you can, then go to town with Fire-elemental magics and Soul Breaks. Vivi, Krile and Terra are all great choices here.
• Just don't Berserk him. Please.
• Use dances to debuff Omniscient.
• Indomitable Blade/Grand Cross to the rescue once again. Deals with Slow, and his weak phase counters. Remember that Soul Breaks generally don't trigger counters, and you can gear Celes to be a mage with 4* Black Magic and Rod access if needed. Looks like Rewind triggers off physical DAMAGE, so Indomitable Blade won't work. There's always Runic I guess, though it doesn't deal with Slow.
• Bring Dispel instead of Banishing Strike to remove his opening Regen.