This Unreal Engine 5.5 video is about making a masked material with an edge that is made with a noise texture, and then also panned.
We start by creating the Noisy Edge Material, and the Noisy Cube and Noisy Sphere Actor Blueprints. We then update the Material to mask based on a ValueZ parameter vs the World Position of each pixel. Next, the Noisy Cube Blueprint is updated to modify that ValueZ parameter. Following that, we finish updating the Material to add a Noise Texture to the mask edge, and then add a two pixel edge with another color, and talk over a few other changes in the Material. Lastly, we add an OffsetZ value to apply the initial ValueZ based on the Actor Z Location.
https://dev.epicgames.com/community/learning/tutorials/m69B/unreal-engine-how-to-make-a-masked-noisy-edge-material