You just need to drag your card (blue) infront of your opponent's card (red).
It's suppose to teach that you can rearrange card execution order if your character's speed stat and Card stats allow it.
I ended up adding WWAAAYYY more then just that patch.
Anyways here it is:
https://spite-games.itch.io/astartes-wake/devlog/1722702/build-032
Enjoy!