

Key Points
- Level 10 DMG Threshold — 940M.
- Fiend Stats — 0 DEF & MRES, 0 Light DMG, 0 Dark RES.
- 14 Initial SP, 4 SP recovered per turn.
- Optimal Skill Sequence: C1 → S1 → S2 → S3 → S4 → S5.
- Bring MRES gear.

Skill Rundown
Trick or Treat!
Trigger: Stack 7 chains on any tile.
Activate this ability when a fight begins to boost your attack power and critical hit rate for the entire battle.
Wicked Flame
A simple damaging skill to all your allies.
Shadowed Slime

Have your carries and chainers take this hit for a boost in damage efficacy.
Raven Tempest
A simple damaging skill to all your allies.
Robe Waltz

Just like S2, have your carries and chainers take this hit.
Pumpkin Magma
Ugh, team wipe! Okay, here we go again with the next team. It’s frustrating because the boss, the Fiend, just resets back to phase one and gets all its abilities back ready to go. Seriously, it’s like starting the fight all over again!
Hunting the Fiend
C1 → S1 → S2 → S3 → S4 → S5
Simply trigger C1 at the start of combat, then have your units tank S2 and S4 for more buffs.
DPS Review

Sonya is a strong support character for this event, dealing area-of-effect damage to multiple enemies. She works best when teamed up with Celia and Luvencia, as they help boost the amount of Nightmare damage she inflicts.
Eclipse (×6/8 AoE) — A good magic carry with tons of wide AoE skills to utilize.

Luvencia’s area-of-effect attacks work well with Sonya, and Sonya becomes much stronger when Luvencia increases the damage of Fiend’s chains.
Blade (×6/8 AoE) — Decent option given that S1 and S3 are great for triggering her counters.
Eleaneer (×6 AoE) — Budget option with decent damage.
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2025-11-12 00:08