Pre-patch note 2.1.21 details:
Changes and Fixes- Galaxia Skill Socket Cards are now usable from Level 20~99.
- Health of Hades has reduced.
- Health of Bone Dragon has reduced.
- Skill 'Sniping' attacks 2 standing or fallen enemies now.- All F6 Rings are now socketable.- 
Removed the "Attack Range" stat from Earth Master's Secmathian Set (3 parts) and replaced it by a different one
(all grades: normal, rare, hero).
We found out that this ability is bugged when used on sets. 
- 
New Level 75 and Level 81 Accessory SetsThese sets consist of Ring, Belt, Earrings and Bracelet
Level 75 "Elemental Spirit" Accessory Set StatsRing: Def/MDef 40, Min/Max Physical Attack +500 and/or Min/Max Magical Attack +500
Belt: Def/MDef 70, STR+17, INT+17, HLT+17, AGI+17
Earrings: Def/MDef 30, Critical Rate +7.5%, Critical Damage+10.0%
Bracelet: Def/MDef 120, Physical Damage Drop 12.5%, Magical Damage Drop 12.5%
Set Effects:2 Parts: Max HP +2000, Max MP +2000
3 Parts: All Element Resistance Rates +7%
4 Parts: All Element Damage Rates +7%, Final Critical Success Rate +1.8%, Five elements resistance 2500
Level 81 "[Hero] Elemental Spirit" Accessory Set StatsRing: Def/MDef 50, Min/Max Physical Attack +600 and/or Min/Max Magical Attack +600
Belt: Def/MDef 80, STR+20, INT+20, HLT+20, AGI+20
Earrings: Def/MDef 40, Critical Rate +10.0%, Critical Damage+12.5%
Bracelet: Def/MDef 130, Physical Damage Drop 15.0%, Magical Damage Drop 15.0%
Set Effects:2 Parts: Max HP +2500, Max MP +2500
3 Parts: All Element Resistance Rates +10%
4 Parts: All Element Damage Rates +10%, Final Critical Success Rate +2.0%, Five elements resistance 5000
How to obtain these sets:The new sets can be obtained by trading with NPC Gwen. 
Level 75 Set:Elemental Spirit Ring for 1 Fire Medallion and 1 Ice Medallion
Elemental Spirit Belt for 1 Nature Medallion and 1 Dark Medallion
Elemental Spirit Earrings for 1 Fire Medallion and 1 Dark Medallion
Elemental Spirit Bracelet for 1 Ice Medallion and 1 Nature Medallion
Level 81 Set:[Hero] Elemental Spirit Ring for 1 Advanced Fire Medallion and 1 Elemental Spirit Ring
[Hero] Elemental Spirit Belt for 1 Advanced Ice Medallion and 1 Elemental Spirit Belt
[Hero] Elemental Spirit Earrings for 1 Advanced Nature Medallion and 1 Elemental Spirit Earrings
[Hero] Elemental Spirit Bracelet for 1 Advanced Dark Medallion and 1 Elemental Spirit Bracelet
- New Achievements20 new achievements have been added:


 - New mount Fluffy
- New mount Fluffy - Element attack has been rebalanced.Pattern:[Old] Black Dragon Lord Element Sword
- Element attack has been rebalanced.Pattern:[Old] Black Dragon Lord Element SwordElement attack 600
Increase element attack 5%
[New] Black Dragon Lord Element SwordElement attack 200
Increase element attack 5%
Pattern:[Old] Element Attack card[Lv.8]10★ - 373
[New] Element Attack card[Lv.8]10★ -319
- Enchant Bonus Damage has been rebalanced.How it work?Player with weapon +16 has ATK 16000
ATK 16000 + Enchant Bonus = ~18000[+16]: 
5% -> 
5%[+17]: 
15% -> 
10%[+18]: 
31% -> 
16%[+19]: 
54% -> 
23%[+20]: 
85% -> 
31%[+21]: 
125% -> 
40%[+22]: 
125% -> 
50%[+23]: 
125% -> 
61%[+24]: 
125% -> 
73%[+25]: 
125% -> 
80%[+26]: 
125% -> 
86%[+27]: 
125% -> 
91%[+28]: 
125% -> 
96%[+29]: 
125% -> 
100%[+30]: 
125% -> 
106%[+31]: 
125% -> 
110%Fixes from Community- Five elements resistance in Protector of Stars sets increase to 4000 from 2600.- All icons '★' has been changed to *. 
- Text 'Star' on items (Earring, Belt and Ring) has been changed to *.
- Text '(Required)[Elements],[Count]' has been deleted from Recipe.
- Items 'Sealed Crystal of Darkness' and 'Key of Light' have been fixed translate and description.
- Description of Roar of victory has been fixed.
- 'Dragon Velly' has been renamed to 'Dragon Valley'.
- Furniture Buff name has been fixed.