"Pepelaz" vertex anim. "Assembly" and "rotation" effects are implemented as stacked material layers. Material parameters are driven by a timeline in the blueprint.
The animation is created using "Easy Vertex Anim plugin" which we are developing. It's a plugin that allows to author vertex animations in the Unreal Editor and a large library of vertex animation effects. It makes easy for anyone to create a vertex animation directly in UE5. More about it: https://www.youtube.com/playlist?list=PLP-uPWYCiCCGKZ31v94LqnQw9JY4xblg0