Royal guard

Royal guard was always the go-to tank for any squad. Now, he's kind of fallen off the map, but I have an idea to make him better. His special ability, imperial phalanx, is one of the most useless abilities in the game, as defense and health up aren't super useful. What I propose is that royal guards special cleanses. Even if it's just empire allies, it would still be a huge improvement, and it would give empire a much-needed cleanser.