Guidance is a cantrip available to Druids and Clerics that gives a single target +1d4 to the next skill check they make. The issue here is that since it's a cantrip, as long as you're not in combat, where using an action to cast this matters, there's no reason not to use it for EVERY single skill check your party ever makes, except that it will slow the game down and (in my experience) make the DM hate you. On the other hand, the cantrip is in the game, it's a good cantrip, and taking it and not using it defeats the purpose. So where would you say the line is? How often do you say it's appropriate to use Guidance? Do you think it's okay to use it for every check, and if not, what limitations would you put in place?