Armors

Helmet main stat: +60% max health

Armor main stat: +500 defense

Gloves main stats:
+ 80 accuracy
+ 200 defense

Shoes main stats:

+ 75 Evasion

+ 20% max health

Fire Dungeon: Masterless Guardian

Set nameEffect 2/4 partsBest for
Attack
+25% / +40% attackDps
Skills based on atk
Critical Hit
+12% / +20% critical rateDps
Units with critical hit effects
Evasion
+10% / +15% evasionPvP for healers or Units with high base evasion like D.Stella
Effectiness
+18% / +30% effectivnessDebuffers

Water Dungeon: Tyrant Toddler

Set nameEffect 2/4 partsBest for
Life
+30% / +50% healthHealer, Defender skills based on max health
Defense
+25% / +15% defenseUnits with high base defense or skills based on defense
Resilience
+18% / +12% resilienceFights that needs to resist debuff or pvp?
Lifesteal
+10% / +15% lifestealBuild based on evasion/counter or fights that need healing

Note: for now lifesteal is limited to max 10% of your hp max

Earth Dungeon: Chimera

Set nameEffect 2/4 partsBest for
Counterattack
+12% / +20% counterattack chanceStrong S1 counter unit like D.Stella or with annoying S1 like Veronica
Accuracy
+10% / +15% accuracyPvP, boss with evasion like Earth weapon dungeon
Speed
– / +25% speedEveryone, universal set as speed is king in most content
Critical Strike
– / +30% critical damageCritical nukers like noa, mostly pve as 4 parts

Light Dungeon: Sacreed Guardian

Set nameEffect 2/4 partsBest for
Penetration
– / +20% penetrationAny nuker
Revenge
increase attack based on HP% lost at a ratio of 160%Units that can survive with low health
Patience
increase defense based on HP% lost at a ratio of 160%Annoying defenders like Hanbyul Lee
Pulverization
increase damage against targets inflicted with Break by 30%PvE set for specific boss

Dark Dungeon: Grand Calamari

Set nameEffect 2/4 partsBest for
Immunity
1 turn immunity buff / –PvP, everyone
Swiftness
increase speed based on HP% lost at a ratio of 100%Healers mostly or unit that needs to play faster to save your team
Weakness
increases damage against debuffed targets by 20%Any dps in a debuffer team
Augmentation
increases damage while buffed by 15%Any dps in team with buff