Meanlucario
Time to get spooky
I noticed that the auto-duel opponents in Master Duel (the ones who names are a mess of letters and numbers) seem to know what you have set. I had a 1800 def monster set, yet that never attacked into it. However, the first opportunity they had to go after a 0 def monster I set a few turns after, and still didn’t even look at the 1.8k def I had set.