Thunder

At each level

10% damage per level

Level 1

All Shock damage is increased by 10%.

Level 2

All Shock damage is increased by 20%.

Level 3

All Shock damage is increased by 30%.

Each level costs 2 skill points: 2, 4, 6 in total. Rule from the Enshrouded dedicated server's code (build 25988414, which matches the game's changelist 1269579).

Cheapest way there

11 skill points from the nearest Spark, taking one level of each node on the way:

1. Spirit Attribute, 1 pt
2. Mage Apprentice Passive skill, 1 pt
3. Intelligence Attribute, 1 pt
4. Arsonist Passive skill, 2 pt
5. Intelligence Attribute, 1 pt
6. Wizard Passive skill, 2 pt
7. Spirit Attribute, 1 pt
8. Thunder Passive skill, 2 pt

A node opens when a link joins it to a Spark or to a node you have, whichever way the link points, and each level costs the node's points: the unlock check in the Enshrouded dedicated server's code (build 25988414, which matches the game's changelist 1269579). From level points alone (2 a level) that's character level 7; extra skill points from the world bring it lower.

Open this path in the planner