Chain Lightning (Original Sin 2)

For an Aerotheurge spell in Divinity: Original Sin and its Enhanced Edition, see Chain Lightning.

Chain Lightning
Skill icon
Skill class	Aerotheurge
Ability Lvl	3
Skill Tier	Adept
Rq. Level	9
Armour resistance	Magic
Status effects	Set: Shocked
Action Points	3
Action Points	3
Source Points	1
Source Points	1
Base Cooldown	5 turns
Base Cooldown	5 turns
Range	13m
Range	13m
impact radius	8m
impact radius	8m
Damage Type	Air
Damage Type	Air
Duration	2 turns
Duration	2 turns
Memory Slots	2
Memory Slots	2

“

Shoot a stunning bolt of lightning that forks up to 8 times in a 8m radius and deals air damage to each target.

„

—Skill description

Chain Lightning is an adept Aerotheurge source skill in Divinity: Original Sin II.

Description

Skill

Chain Lightning is a offensive aerotheurge skill that allows caster to shoot lightning at their their chosen target. The lightning will deal air damage and jump between enemies if they are in 8 meter radius from each other. The lightning will not jump between targets that have been already harmed by it. The lightning will electrify any water and blood surfaces as well as clouds.

Characters without Magic Armour will be afflicted with Shocked status effect for 2 turns and will suffer damage directly to their health. If character is already affected by Shocked or Wet, they will be instead affected by Stunned status effect which will paralyse them for 1 turn.

Since Chain Lightning relies on Aerotheurgy magic it cannot be cast if character is affected by Silenced and Enraged status effects. Chain Lightning skill is reflected back when the target is under Deflective Barrier skill. If the lightning is deflected it will only harm the caster and will not spread to their allies.

Scroll and Skillbook

Chain Lightning skillbook is a magical item that allows its reader to learn Chain Lightning skill, if they have at least 3 points into Aerotheurge ability, and use it indefinitely. In order to be able to cast the skill, character needs 2 free memory slots. Note that the book will disappear once read. The book weights 0.5 and its base value is 800 gold. A skillbook can be crafted if a Chain Lightning scroll is combined with a Blank Air Skillbook. Since Chain Lightning is a adept Aerotheurge skill, traders will start selling the skillbook once player character or their companions reach level 9.

Chain Lightning scroll is a magical item that allows any character to cast Chain Lightning skill, regardless of skill prerequisites, but only once. The only limiting element in casting Chain Lightning this way is the amount of Action Points (AP) character has at their disposal in current turn. The scroll is craftable, weights 0.02 and has base value of 260 gold.

The cost of Action Points between Chain Lightning scroll and Chain Lightning skill themselves varies. The cost to cast Chain Lightning as a source skill is 3 Action Points and 1 Source Point whereas the cost to cast Chain Lightning as a scroll is only 3 Action Points.

Both the scroll and the skill itself are affected by other skills and talents that may provide additional bonuses.

Skill Modifiers

Damage of this skill is calculated with the following formula: (Base Damage) x (1 + Elemental Bonus%) x (1 + Attribute Bonus% + Weapon Skill Bonus %) x (1 + High Ground Bonus% + Crit Bonus%) x ( 1 + Misc Bonus %)

The damage of this skill is affected by the following attributes of the caster:

1. Level
2. Aerotheurge ability
3. Intelligence attribute
4. Height bonus
5. Critical Damage Modifier

Out of these the most effect on the damage have Level and then Aerotheurge ability as the latter increases damage by 5 % per point. Level provides greatest boost to the damage done. Intelligence provides the lowest bonus out of the three (3 points in Intelligence are equal to 1 point of Aerotheurge).

When it comes to enemies they may resist air damage if they have: Air Immunity Status and high enough Air Resistance (which lowers air damage done).

Chain Lightning properties can be affected by talents, consumable items (some of which may be affected by Five-Star Diner talent) and other skills.

Table of Item, Skill and Talent modifiers

Consumable Items	Description	Skills	Description	Talents	Description
Green Tea	Lowers AP cost by 2 points (Never below 1 AP).	Encourage	Increases Intelligence	Far Out Man	Increases range of the skill and scroll by 2 meters
Calocera	Increases Intelligence by 1 point	Flesh Sacrifice	Increases damage done by 10 % (counts as Miscellaneous Bonus)	Ambidextrous	Decreases AP cost of a Chain Lightning scroll by 1 point
Intelligence Potion	Increases Intelligence by 1/3/11 points	Peace of Mind	Increases Intelligence	Elemental Affinity	Decreases AP cost of Chain Lightning by 1 point if caster stands in any type of electrified surface
Attar of the Blood Rose	Increases all attributes by 1 point	Death Wish	Will grant bonus to damage equal to the percentage of missing health.	Savage Sortilege	Allows Chain Lightning to do critical damage by using casters critical chance
Enlightenment Herbmix	Increases Intelligence by 8 points	Farsight	Increases range of the skill by 4 meters.	Magic Cycles Gift Bag: Sourceror Secrets	Cycle of Earth and Air increases Aerotheurge by 2 points
Draught of Intelligence Gift Bag: The Song of Nature	Increases Intelligence by 7 points	Skin Graft	Resets skill cooldown	—	—
Potion of Power Gift Bag: The Song of Nature	Increases damage by 10 %	Apotheosis	Reduces the Source Point cost of Chain Lightning to 0 for 2 turns	—	—

Locations

Traders

Following table shows all NPCs who are guaranteed to sell hydrosophist spellbooks, with their location and coordinates in the right column, from them. The location shown in the table (and the coordinates) are only for the initial location the NPC is in. Note that some of these may have other spell/skillbooks and goods to sell. Almira may follow the Godwoken on Lady Vengeance if her demands are met. Also note that Lizard Dreamer requires a persuasion check to be passed in order to speak with him, otherwise he (and the whole encampment) will turn hostile.

Trader	Location (x, y)	Trader	Location (x, y)
Gawin	Fort Joy (182, 166)	Gratiana	Sanctuary of Amadia (431, 18)
Almira	Paradise Downs (707, 391)	Ovis	Driftwood Square (340,108)
Elf Stormchanter	Elven camp (509, 314)	Trayde the Merchant	Temple of Tir-Cendelius (259, 914)
Lizard Dreamer	Black Ring encampment (238, 750)	Aravae	The Cathedral (313, 354)
Friel	The Cathedral (318, 363)

Crafting

Chain Lightning Scroll

Sheet of paper + Source orb + Wool ↓ Chain lightning scroll

Chain lightning skillbook

Blank Air Skillbook + Chain lightning Scroll ↓ Chain lightning Skillbook