There are some times where I will attempt a new quest without looking at any of the encounter cards because I want to be surprised. Other times, if I am having a tough time with a quest or if I want to get a nice score, I prefer to have as much knowledge as possible.
For the latter occasions I've put together a shadow card reference guide. It lists the shadow effects and their quantity in each scenario: https://docs.google.com/spreadsheets/d/1yZH9Ze9t2TmYBZIjtmuPVTiBiLbP1Pms5EJekGkKJDA/edit?usp=sharing
(I recommend using Ctrl+F to search through the scenarios)
I know there have been many times where I wanted to defend with a hero but decided against it because he'd be destroyed if I were to draw a +attack shadow effect. This reference now allows me to check the probability of such an effect with a quick glance. This idea may not appeal to everyone, but I thought at least a few others may find it useful, so I have decided to share it.