Animations are a relatively new addition to UMG, and are still being improved by Epic. That being said, it’s still possible to make juicy animations in UMG, once you get used to a few of the quirks of the system.
Controlling Materials in UMG Animations
The ability to control material properties from an animation is absolutely indespensible for anyone using UMG. The interface for it is a little hidden but with it, you can set keyframes to control scalar and vector parameters to materials.