I just released a new module for Decker which simplifies a variety of kinds of animation.

With a teeny amount of boilerplate in a card script:

You can achieve all sorts of visual effects with just a line or two of additional code:

Check out the interactive documentation over here: https://beyondloom.com/decker/zazz.html

You can also find zazz.deck on GitHub.

Wow! Looks good! Need to try this out!