Witch on the Holy Night Collab - Challenge Guide (High Difficulty)

Enemy Layout

Requirements: Clear Event Main Quest Epilogue and Mission 100.

Boss Statistics

Overview

• Face off against Aoko herself in the first Challenge Quest of the Witch on the Holy Night collaboration event! Aoko has 3 HP bars and is a Foreigner (711k, 837k, 1.15M HP).
• Aoko starts with an ATK +30% buff that lasts for 10 hits, along with 3-time Mental Debuff Immunity (which includes Confusion, Terror, Charm, etc).
• Additionally, she will start with a special defensive skill that gives her 8 times across 3 turns of Damage Resist +50%, Damage Cut by 5,000, and Immobilization Debuff Immunity. She will continue reapplying these if they ever run out during her first and second HP bars.
• After 3 turns pass, she has to repay her 'debt' and gets DEF -30%, Crit Rate -50%, and Debuff Res -50% for 8 times across 2 turns.
• During her second and third HP bars, she will begin using a different special skill that gives her ATK +30%, DEF +30%, and +1 NP per turn for 6 times, 3 turns.
• For this buff, after 3 turns pass, she repays her 'debt' with DEF -20% and ATK -20% for 6 times across 2 turns, and immediate loss of 3 NP charge.
• During only her third HP bar, she uses her final special skill that gives immediate NP +3 charge, NP Damage +50% (1 time, 3 turns), Crit Rate +100%, and Crit Damage +30% (2 times, 3 turns).
• For this final buff, after 3 turns pass, she repays her 'debt' by getting NP and Skill Sealed, along with ATK -50% all for 2 turns.
• Her first break effect gives her 5 stacks of the special Magic Bullet buff, which increases the damage of her normal attacks and NP, and gives her 5 turns of Ignore DEF.
• Her second break effect gives an additional 5 stacks of Magic Bullet, clears all her debuffs, and fills her NP charge to MAX and has her immediately transform to Super Form. Additionally, she will gain 1-hit Evade every turn and also clears all the 'debt' delayed debuffs associated with the special skills she used on 1st and 2nd HP bars.
• Be wary that her NP in Super Form will Ignore Invincibility and Ignore DEF before applying damage to all targets!

Team Recommendations

• This battle is relatively straightforward given there is only one enemy, and can technically be solo'd (see video links).
• ST Alter Ego Damage Dealers are excellent choices for both Offensive and Defensive Class advantage against Aoko (being a Foreigner). Alternatively, other Classes that have Offensive advantage, such as other Foreigners, are also great options.
• Bazett is a standout option, capable of clearing the encounter if brought as a Friend Support with free-to-play friendly Servants supporting her in the lineup (see video links).
• NP Gauge and Damage Support is helpful for making sure the damage dealer defeats Aoko as quickly as possible. The usual Supports including Castoria, Lady Avalon, Skadi/Skadi Ruler, Merlin, Koyanskaya, Oberon, Waver, or Reines all work well for their respective Card types.
• Bringing the Event Damage CE Hot Springs Ball Games on the main Damage Dealer will be crucial to ensure they can bring down Aoko quickly, due to her high HP values..

Video Links

• Note that these videos are not affiliated with GamePress, but showcase some lineups that are effective in clearing the final challenge. These can serve as a good reference for how to rotate skills during this quest or simply to have a look at the encounter before diving in.
• Support Bazett NP1 w/ Xu Fu, Habetrot, backline Kotarou (6 turns)
• Lady Avalon, Aoko, 2x Castoria, Chloe Avenger (4 turns)
• Grigori Rasputin solo w/ Lv1 Georgios, Habetrot (9 turns)
• Bazett NP1 w/ Skadi + Skadi Ruler, no backline (3 turns)
• Mecha Eli-chan w/ 2x Koyanskaya, Merlin, Oberon, Chloe Avenger (3 turns)
• Yang Guifei w/ 2x Castoria, Lady Avalon, Oberon, Chloe Avenger (3 turns)

Quick Servant Suggestions