Dark-element 
Ranger boss featured in the Dimensional Singularity rotation. A Speed-relativity puzzle: heroes slower than Skuld deal +50% damage to her, while heroes faster than her take +50% damage — and she ramps your whole team's 
Speed by 5% each turn (max +25%). She also takes +50% damage from heroes at 90% HP or less, inflicts that ignores , and caps Curse / Fixed damage at 50000. As a Dark boss her Berserk passive heavily mitigates damage from non-advantage targets, so 
Light heroes are favored.
Skuld
Lv. 100Immunities
4,536Attack
1,917Defense266Speed
20%Crit Chance
150%Crit DMG
0%Crit DMG Reduc
0%Penetration
100%DMG Increase
50%DMG Reduction
240Effectiveness
168ResilienceWG60WG
Skills
Establish : Future Plan
Single TargetAttacks an enemy and increases own Priority by 20%.
Measure : Variant Suppression
CD 4All EnemiesAttacks all enemies. Inflicts Unbuffable on all enemies for 2 turns. (Ignores Immunity)
Execute : Timeline Readjustment
CD 5All EnemiesAttacks all enemies. Increases own Priority by 30% and decreases all enemies' Priority by 30%.
Objective : Future Confirmation
DMG taken from enemies with 90% or less current HP increases by 50%. Deals 50% bonus DMG to enemies with higher Speed than self. Curse and Fixed DMG taken by the boss cannot exceed 50000.
Factor : Relativity of Time
At the start of every turn, increases all enemies' Speed by 5%. (Max 5 stacks) DMG taken from enemies slower than self increases by 50%.
Dimensional Rift
(Passive Effect) The boss monster's Priority increases after entering Berserk state. The following effects are added depending on rank.
Applies from RANK D: DMG dealt by all attacks increases and DMG taken decreases. The values increase as rank rises, reaching their maximum at SSS. (Up to 300%/200% respectively)
Applies from RANK B: Final DMG taken and WG DMG taken from targets without elemental advantage decrease by 70%/50% respectively.
Applies from RANK S: Increases the caster's Penetration by 30%.
Class Synergy: After an enemy acts, if there is exactly 1 enemy team member of the corresponding class, gains a special effect.
Mage: Enemy 
Striker DMG increases by 8% (Max 10 stacks)
Striker: Enemy Mage DMG increases by 8% (Max 10 stacks)
Healer: All enemies' DMG taken decreases by 8% (Max 10 stacks)
Defender: Boss Attack decreases by 2% (Max 5 stacks)
Ranger: The boss takes Fixed DMG equal to 1% of its Max Health
Enraged
All EnemiesEnters Berserk state every time enemies take 6 actions. Berserk Entry & Ultimate Skill : Grants self an undispellable Speed UP/DMG Reduction effect for 1 turn and recovers WG by 10%. Increases own Critical Hit Chance for 2 turns.
Strategy
- Be slower than the boss. Heroes with lower Speed than Skuld deal +50% damage to her, while heroes faster than her take +50% damage. She increases your whole team's Speed by 5% at the start of every turn (max +25%), so leave a wide speed margin.
- As a Dark boss, her Berserk passive reduces Final DMG and WG DMG taken from non-advantage targets by 70% / 50% (from Rank B). Build around Light heroes for elemental advantage.
- The boss takes +50% damage from heroes at 90% current HP or less — avoid over-healing your damage dealers.
- Her S2 inflicts on the whole team for 2 turns and ignores — buffs applied during that window are blocked, so favor self-sufficient kits over buff-stacking.
- Curse and Fixed damage dealt to the boss cannot exceed 50000. She is also immune to crowd control (Stun, Freeze, Petrify, Silence, Provoke) and to manipulation, and she heavily manipulates priority (S1 +20%, Ultimate +30% to herself / -30% to all enemies).
Gnosis Beth team
Main DPS — carries with . Equip 
Rogue's Charm.
to keep stacks alive; Akari also adds . Run Rogue's Charm on Akari and 
Mage's Charm on Maxie.
dual attacks, AP battery and . Equip 
Vanguard's Charm.
Takes many turns thanks to her and 
Dies Irae, providing . Equip Mage's Charm.
Light team
Main damage dealer with high damage mitigation.
Cooldown reductions, plus buffs to cover for immortality, revival and invincibility.
Dual attacks, starts the WG-damage chain, and provides and .
Mystic Sage Ame, Leo, Demiurge Drakhan
Pick one — Mystic Sage Ame brings cooldown reduction for the main DPS's S3 and high WG damage; Leo brings a cooldown-reduction chain starter and ; Demiurge Drakhan brings AoE damage reduction, buff, and WG-damage support.