DEMACIAAAAAAAA!

When I was playing Lux earlier, there was a Garen on the enemy team. When I ulted, Lux yelled, "Demacia!" About the same time, Garen did as well. It gave me an idea: could Lux and Garen simultaneously yell "Demacia!" after working together to get a kill? Is it possible for something like that to be implemented?

Also, could there be special interactions or a special passive between the two of them, like Caitlyn and Vi? Or are there special interactions already that I'm unaware of?