I really like that!
Good synergy system.

An interesting idea, to give Purifier beam at least some killing potential. But relies heavily on you landing skilshots. And to make it work you need to engage heroes that are alone, because in a teamfight you will be bursted down in seconds, as long as the enemy team has any skill.

Still its good to see someone trying to break the convention and create new ways to use heroes. Thanks for the effort you have put in this and I hope to see more new ideas. :)