Yazan Rule

I have what is called the Yazan rule. Basically, while in combat, if the player is Battle Ready, i.e. knows and declares their movement or action within 3 seconds of me telling them it is their turn, they get a +1 on their action (attack, check, whatever). Really keeps shit going with larger parties where people tend to get distracted (had a game with 7 players, one of which was online).