Lost Sword Snow Mountain Floor 3 Team Build and Clear Guide

To clear Snow Mountain Floor 3 in Lost Sword, field a four-character team with a durable frontline tank, a sustained healer, and two damage dealers capable of breaking ice barriers. Success requires turning the boss away from fragile allies, spacing your backline to avoid crowd control overlaps, and saving burst skills to shatter the boss's channeled shield before the enrage timer activates.

Stage Mechanics and Boss Threats

Snow Mountain Floor 3 tests team durability, crowd control management, and damage output:

Stacking Chill: Frost elementals and the boss apply chill debuffs that slow party attack speed and delay skill rotations. If not cleansed or shielded, these stacks freeze affected characters.
Protective Barriers: Elite enemies and the encounter boss generate durable shields that absorb significant damage.
Frontal Cleaves and Ice Spikes: The boss uses wide-angle frontal melee sweeps and targets ground ice spikes at backline units.
Channeled Frost Storm: The boss periodically charges a shield bar. Failing to break this gauge in time triggers severe party-wide freeze and heavy damage.
Enrage Timer: If the fight lasts too long, the boss enrages, drastically boosting its attack power and wiping the team.

Recommended Team Composition and Role Priorities

Build a balanced roster that pairs elemental burst damage with dependable frontline mitigation.

Team Role	Primary Objective	Recommended Characters & Types	Key Priority Stats
Frontline Tank	Taunt the boss and absorb frontal sweeps	Galahad, defensive paladins	Max HP, Physical DEF, Block Rate
Primary Burst Carry	Break boss shields and exploit weaknesses	Flame Kay, Flame Emperor, duelists	ATK, Crit Rate, DEF Penetration
Secondary DPS / Support	Clear minions, apply buffs, and shred defenses	Crassa, Morgan le Fay, Lueria	Skill Haste, Crit DMG, ATK
Healer / Cleanser	Remove chill stacks and heal ground slam damage	Restorative casters, defensive buffers	Healing Output, Cooldown Reduction, HP

Flame-attuned carries offer an advantage by quickly melting enemy barriers, preventing the party from stalling against high-durability targets.

Positioning and Skill Timing

Automating combat on this floor often wastes high-value cooldowns against invulnerable states or triggers abilities during low-threat phases. Manage positioning and skill windows manually:

Face the Boss Away: At the start of the battle, direct your tank forward to engage the boss immediately. Keep the boss facing away from the party to prevent its frontal cleaves from hitting vulnerable allies.
Spread the Backline: Position your healer and damage dealers across separated rear quadrants. Keeping units spaced apart ensures that ground ice spikes only affect one character at a time.
Save Burst Cooldowns for Channel Phases: Hold your primary carry's ultimate abilities and support attack buffs until the boss begins channeling its frost storm shield. Unleash all offensive skills immediately to break the meter and trigger a brief stun state.
Time Shields for Telegraphed Slams: Deploy defensive barriers or major heals immediately before large ground slams land, rather than using them on cooldown.

Progression and Gear Preparation

If incoming damage or shield thresholds block your progress, optimize your roster's underlying stats before re-entering the stage:

Reinforce Tank Survivability: Prioritize physical defense, flat health, and crowd control resistance on your tank's armor to endure successive melee strikes.
Refine Carry Weapons: Upgrade weapons and accessories prioritizing flat attack and critical strike chance. Consistent critical hits accelerate shield breaking and relieve healing pressure.
Activate Auxiliary Systems: Equip pets, Chaos Cube enhancements, and Relics that provide crowd control reduction, passive health recovery, or attack speed preservation to offset the stage's chill debuff.