Μ's Third-Years/Strategy

Strengths

• Can Dispel an enemy buff, particularly useful against certain Light bosses like Luminiera Omega and Xeno Corow.
• Provide several useful party-wide buffs: a powerful 25% DA UpDouble attack rate is boosted
  Strength: 25%Duration: 2 turns and 25% TA UpTriple attack rate is boosted
  Strength: 25%Duration: 2 turns, Supplemental DMGDMG dealt is supplemented
  Strength: 1% of foe's max HP (Damage cap: 25252)Duration: 2 turns, 40% DMG CutTaking 40% less DMG
  Duration: 1 turn Damage Cut reducing damage taken for all elements.
  Warning! Does not work for Plain Damage! with 30% Repel (1 time)Taking less DMG and reflects attacks
  Strength: 30%Duration: 1 turn Damage Cut reducing damage taken and reflecting attacks.
  Warning! Does not work for Plain Damage!, 15% Dark ATK UpDark ATK is boosted
  Strength: 15%Duration: 5.5 turnsApplied during the attack phase.
  On the next turn, it'll have 5 turns remaining. on Charge Attack, and party-wide 50% C.A. DMG Up (1 time)Charge attack DMG is boosted (1 time)
  Strength: 50%Duration: Indefinite and 20% C.A. DMG Cap Up (1 time)Charge attack DMG cap is boosted (1 time)
  Strength: 20%Duration: Indefinite if Dispel succeeds.
• Applies 20% Light ATK DownLight ATK is lowered
  Strength: 20%Duration: 180 seconds and 20% Dark DEF DownDEF is lowered for dark DMG
  Strength: 20%Duration: 180 seconds, which stack with other forms of DEF Down to hit the DEF Down cap (-50%).
• One of the only Dark characters to carry party-wide damage mitigation (40% DMG CutTaking 40% less DMG
  Duration: 1 turn Damage Cut reducing damage taken for all elements.
  Warning! Does not work for Plain Damage!).
  • Further mitigation potential rises to at least 70% with the addition of 30% Repel (1 time)Taking less DMG and reflects attacks
    Strength: 30%Duration: 1 turn Damage Cut reducing damage taken and reflecting attacks.
    Warning! Does not work for Plain Damage! and Shield (1500)Next ATK received will be ineffective for a fixed amount
    Strength: 1500 when they reach Lvl 100.
  • Combined with Opal Carbuncle or Athena (Summon), a 100% damage cut can be reached, nullifying elemental damage for the next hit.
• Small heal from C.A. and 5.5 turns of RefreshHP is restored on every turn
  Duration: 5.5 turnsApplied during the attack phase.
  On the next turn, it'll have 5 turns remaining. helps sustain the party without intruding on Enmity, which is more effective at lower HP.
•  Otonokizaka Third-YearsReduce all allies' Light damage taken by 10%. passively increases the party's survivability by reducing Light damage taken.

Weaknesses

• Multiattack and Supplemental DMGDMG dealt is supplemented
  Strength: 1% of foe's max HP (Damage cap: 25252)Duration: 2 turns buffs last a short 2 turns, leaving 4 turnsAfter Lvl 90. without buffs before it can be recast.
• Cannot directly cap DEF Down with  Miserable MistInflict 25% ATK DownATK is lowered
  Strength: 25%Base Accuracy: 80%Duration: 180 secondsStacking: Dual and 25% DEF DownDEF is lowered
  Strength: 25%Base Accuracy: 80%Duration: 180 secondsStacking: Dual on all foes.; needs at least one other source of DEF Down.
• 40% DMG CutTaking 40% less DMG
  Duration: 1 turn Damage Cut reducing damage taken for all elements.
  Warning! Does not work for Plain Damage! and 30% Repel (1 time)Taking less DMG and reflects attacks
  Strength: 30%Duration: 1 turn Damage Cut reducing damage taken and reflecting attacks.
  Warning! Does not work for Plain Damage! has a long cooldown (7 turns), leaving gaps in their defensive abilities.
  • 5★ uncap is practically required to gain 30% Repel (1 time)Taking less DMG and reflects attacks
    Strength: 30%Duration: 1 turn Damage Cut reducing damage taken and reflecting attacks.
    Warning! Does not work for Plain Damage!, locking newer players behind EXP gate.
• Have no way of protecting themselves from debuffs.
• Lackluster set of Extended Mastery Perks.

General Gameplay

•  Nico-Nico-Ni!All allies gain 25% DA UpDouble attack rate is boosted
  Strength: 25%Duration: 2 turns and 25% TA UpTriple attack rate is boosted
  Strength: 25%Duration: 2 turns.
  At level 90:
  All allies also gain Supplemental DMGDMG dealt is supplemented
  Strength: 1% of foe's max HP (Damage cap: 25252)Duration: 2 turns. and  How Spiritual!Inflict 15% Light ATK DownLight ATK is lowered
  Strength: 15%Base Accuracy: 90%Duration: 180 seconds and 15% Dark DEF DownDEF is lowered for dark DMG
  Strength: 15%Base Accuracy: 90%Duration: 180 seconds on all foes.
  At level 95:
  Debuffs increased to 20% Light ATK DownLight ATK is lowered
  Strength: 20%Base Accuracy: 90%Duration: 180 seconds and 20% Dark DEF DownDEF is lowered for dark DMG
  Strength: 20%Base Accuracy: 90%Duration: 180 seconds.
  Also inflict 40~50% DA DownDouble attack rate is lowered
  Strength: 40~50%Base Accuracy: 90%Duration: 180 seconds and 20% TA DownTriple attack rate is lowered
  Strength: 20%Base Accuracy: 90%Duration: 180 seconds on all foes. can be used at the start of battle and recast once they come off cooldown, unless there is a reason not to—such as Luminiera Omega raids, or to avoid wasting multiattacks buff on a whole-party C.A. turn.
•  Khorosho!Remove 1 buff from a foe. If successful, all allies gain 30% C.A. DMG Up (1 time)Charge attack DMG is boosted (1 time)
  Strength: 30%Duration: Indefinite.
  At level 90:
  Buff increased to 50% C.A. DMG Up (1 time)Charge attack DMG is boosted (1 time)
  Strength: 50%Duration: Indefinite.
  If buff removal is successful, all allies also gain 20% C.A. DMG Cap Up (1 time)Charge attack DMG cap is boosted (1 time)
  Strength: 20%Duration: Indefinite. dispels the enemy's last buff (the icon furthest to the right, if it gains multiple buffs). For most new players, this will see heaviest use in Luminiera Omega raids.
• Like Khorosho!,  Melody of the HeartAll allies gain 40% DMG CutTaking 40% less DMG
  Duration: 1 turn Damage Cut reducing damage taken for all elements.
  Warning! Does not work for Plain Damage!.
  At level 100:
  All allies also gain 30% Repel (1 time)Taking less DMG and reflects attacks
  Strength: 30%Duration: 1 turn Damage Cut reducing damage taken and reflecting attacks.
  Warning! Does not work for Plain Damage! and Shield (1500)Next ATK received will be ineffective for a fixed amount
  Strength: 1500. should be used as needed. Because of its lengthy 7-turn cooldown, it would be best to know the raid's mechanics if you aren't confident in your party's survivability. Knowing when to use a damage cut effectively goes a long way.

Luminiera Omega

Luminiera Omega is a bit of a gimmicky raid that may trip up newer players, especially when dealing with Aegis Merge. Luckily, μ's Third-Years have been geared for this raid, making it easier to deal with her even without a strong party.

 Khorosho!Remove 1 buff from a foe. If successful, all allies gain 30% C.A. DMG Up (1 time)Charge attack DMG is boosted (1 time)
Strength: 30%Duration: Indefinite.
At level 90:
Buff increased to 50% C.A. DMG Up (1 time)Charge attack DMG is boosted (1 time)
Strength: 50%Duration: Indefinite.
If buff removal is successful, all allies also gain 20% C.A. DMG Cap Up (1 time)Charge attack DMG cap is boosted (1 time)
Strength: 20%Duration: Indefinite. is your savior from Aegis Merge. Luminiera always uses Aegis Merge on turn 1, so do not use any debuffs on her at the start of battle. Use Khorosho! at the start of turn 2 to remove Debuff Res. UpDebuff resistance is boosted
, then apply debuffs but hold on to any damage skills. Dispelling Debuff Res. UpDebuff resistance is boosted
will trigger Aegis Unmerge on enemy phase, and Luminiera will remove the Damage Cut buffs from itself. At the start of turn 3, you are now free to use your damage skills.

Ideally, you can burst it down to 50% before it fills its charge diamonds and re-applies Aegis Merge. For most beginners, this won't be feasible; just wait for Khorosho! to come off cooldown again and repeat the process. If you need to call backup, it may be useful to have Khorosho! ready to use; every player that joins and uses a normal attack will reactivate Aegis Merge, and Khorosho! might be needed if other players didn't bring a Dispel of their own.

Characters

Dark Staff characters for Atma Staff teams: Cagliostro (Dark), Cagliostro (Halloween), Clarisse (Valentine), Karyl, Lunalu (SSR), Marquiares, Vania

• Cagliostro (Dark) provides Recovery Cap BoostedRecovery cap is boosted
  Strength: Adds +1000 HP to the healing cap.Duration: 1 turn , boosting μ's C.A. heal to 1500 HP for that turn.  NehushtanAll allies gain RefreshHP is restored on every turn
  Strength: 10% of max HP (Healing cap: 250)Duration: 7 turns and 20% Dark ATK UpDark ATK is boosted
  Strength: 20%Duration: 7 turns.
  At level 75:
  RefreshHP is restored on every turn
  Strength: 10% of max HP (Healing cap: 300)Duration: 7 turns healing cap increased to 300. Buff increased to 25% Dark ATK UpDark ATK is boosted
  Strength: 25%Duration: 7 turns. provides additional small heal-over-time in case μ's isn't enough, and their Dark ATK UpDark ATK is boosted
  effects stack with each other. In parties that prefer being at high HP, Cagliostro's  Extended Mastery Support SkillRestore all allies' HP upon using charge attack gives her a party-wide heal on C.A., much like μ's (but stronger at 3★).
• Karyl is another free Dark SSR, and her 15% Dark DEF Down (Stackable)DEF is lowered for dark DMG (Stackable)
  Strength: 15% (Max: 30%)Duration: 180 seconds + μ's 15% Dark DEF DownDEF is lowered for dark DMG
  Strength: 15%Duration: 180 seconds is enough to cap DEF Down on turn 1 with MC's  Miserable MistInflict 25% ATK DownATK is lowered
  Strength: 25%Base Accuracy: 80%Duration: 180 secondsStacking: Dual and 25% DEF DownDEF is lowered
  Strength: 25%Base Accuracy: 80%Duration: 180 secondsStacking: Dual on all foes. or  Armor Break100% elemental damage to a foe.
  Inflict 20% DEF DownDEF is lowered
  Strength: 20%Base Accuracy: 80%Duration: 180 secondsStacking: Single.^[1].