We can definitely make a support plugin for Cards "clashing" down the line. First we need Enemy Decks and Cards working which is a major feature slated for the CGC v1.8.0 update. So come back to us in a few months and we should have these features available for you to work with.
In the meantime, it is possible to "fake" clashing with Enemy Cards. Check out the Fishing Minigame in the Demo Project and look at how those Skills are setup. You can build on top of that to replicate some of the behavior in Library of Ruina.