Chain Lightninghttps://irowiki.org/wiki/Chain_Lightning

Chain Lightning
Type:	Offensive Skill
Levels:	5
SP Cost:	70 + (Skill Level × 10)
Fixed Cast Time	1 second
Variable Cast Time	[3 + (Skill Level × 0.5)] seconds
Cast Delay	3 seconds
Target:	Enemy
Range:	Magic
Area of Effect	5x5 ~ 7x7
Property	Wind
Spell Book:	Yes
Prerequisites
(Warlock) Summon Lightning Ball Lv. 1

Chain Lightning (Alt: Chain Lightning) is a 3^rd class offensive skill available as Warlock.

Inflicts Wind property Magic Damage to a single target and chains the damage to all enemies in a 5x5 area around it.

Damage (MATK) = [Base_Damage × (BaseLv ÷ 100)]%

Chain Damage Bonus (MATK) = [100 × (9 − Chains)]%

• After the second chain, the area of effect becomes 7x7.

• Ordinary Black Magician Hat - If upgrade level is +9 or higher, increases damage by 10%.
• Ring of Pazuzu [1]:
  • Increases damage by 1% for every 3 base levels.
  • If Chain Lightning is level 5, reduces SP cost by 35.
• Survivor's Orb & Survivor's Rod Set:
  • Increases damage by 15% if Survivor's Rod upgrade level is +10 or higher.
  • Increases damage by an additional 30%, if the users base level is 100 or higher.
• Survivor's Shoes & Survivor's Rod Set - Increases damage by 100% for 5 seconds when physically and magically attaked.

• Ice Crystal Circle [1]
  • Reduce After Cast Delay by 5%.

• Ice Crystal Circle [1] + Circlet of Time(Warlock) [1]
  • Reduce After Cast Delay by 5%.
  • For every 2 refine levels, increases damage by 10%.
  • For every 3 refine level of Helmet, increase magic damage against all size enemies by 4%.
  • If refine level is +11 or higher -
    • Reduces variable casting time by 30%.
  • If helmet is enchanted with Temporal Jewel (Agi) lv.3 -
    • Reduce After Cast Delay by 10%.
    • ASPD + 10%.
    • Increases damage by 10% for every 2 refine levels.

• Eye of the Storm
  • For every 2 base level, Increases damage of Chain Lightning, Varetyr Spear, Lightning Ride skills by 1% (Up to 250 levels).
  • Enable to use the skill Water Insignia Lv. 1 (Wind property damage will increase by 50%).