Skills in Divinity Original Sin 2 are actions or spells that are used by characters to cause a particular effect depending on that skill.
Players learn skills in Divinity Original Sin 2 by using Skill Books that they can purchase from vendors, or find in loots throughout the game. A character can learn a Skills associated with each Ability they have one point in, and every further Ability point invested increases this limit, as shown in the table below.
Each skill requires a certain Ability level; if this level is not met, the Action Point cost of the skill is increased by 2 for each Ability level below the requirement. Also, every even Intelligence point after five will reduce the skill cooldown by one (minimum 1).
Skills have a recommended Attribute requirement based on their Skill level. Each Attribute point below the requirement reduced the effectiveness of the Skill by 10%, while each Attribute Point above the requirement grants a 5% Bonus. The effectiveness of a Skill affects its chance of causing the Status Effect that it carries. The damage caused by the Skill is also affected by the attribute requirement. For example, the Aerotheurge skill "Chain Lightning" requires at least 13 attribute points in Intelligence- to be able to have a 70% base chance of causing the Status Effect Stunned. If you have only 12 points of Intelligence (-1 from the requirement) then the base chance will be 60% instead. If you had 16 points of Intelligence (+3 from the requirement), the base chance would then be 85% instead.
Divinity Original Sin 2 Skills