(RPG MAKER 2K/3) PROVOKE SKILL

You would need a DynRPG plugin for that. It is possible to detect the skill usage of the hero and its target, and it's possible to change the target of the enemies' skills, both using the onDoBattlerAction callback.

Now you either need to know C++ or find somebody who does and is willing to create the plugin for you. It's quite simple, but I don't have time right now.