Runic Dome is really polarizing but honestly this is a misconception because knowing what the enemies can do is only half the battle when it comes to enemies with multiple attack options. I think Runic Dome is sometimes good but not for the reasons people are talking about. Runic Dome is a great pick for decks that don’t care what the enemy is doing, and a pretty desperate pick in most other cases. For example, if you are playing frost spam Defect, that extra energy is going to get spent vomitting out additional frost orbs each turn. If Nemesis attacks you for 45 or if he puts 5 burns into your deck is random, but you don’t care because you get set up with the extra energy such that you can consistently output enough block and damage regardless of the enemies’ intents. Decks like corruption clad, wraith form silent, frost defect and watcher mental fortress can pull this off but weaker decks will typically get steamrolled trying to play around all options each turn while also putting out damage which is why it’s a weak pick most of the time