TSB Skill Builder V2,
without the confusion.
TSB Skill Builder is a private-server tool for combining existing moves, animations and visual choices into a custom skill. It is separate from any script listing on this site.
Open it in a private server
Use the game’s private-server tools and enable Skill Builder from settings. If the UI feels too small, adjust the interface scale before starting.
Set the move first
Name the skill, choose its cooldown and variants, then place the move sequence on the timeline. Keep the first version simple.
Validate before saving
Use the Gauntlet Validator before saving and equipping. This catches issues that make a custom move look complete but fail to behave as expected.