In the game, when ever one of your party members manages to land a critical hit or hit an enemy with
a skill that has an element the enemy is weak to, they gain the smirk status effect.
It basically increases the effect of buffs and it also heals all allies if they have smirk status.
by now, I think most people know that I hate misanthropic bad guys, but I realize one more reason I hate them so much is because the motive is easy and takes no thought to come up with. It's actually more challenging to create a villain that doesn't have that motive.