Inspired by Iker Mozos' own tool, this is a "soft modification tool" that allows animators to make subtle corrections to final poses. It follows the geometry during the animation process. It's super useful for fixing up a pose, and I also find it helpful for making adjustments to Blendshapes.
Scaling the control increases the radius of the soft mod, and there's a control to change the falloff type from Surface to Volume.

Model: https://rogeliosol.com/
Rig and Anim: Me
Project: Cascade