Hello. Question, how exactly does one build enhanters? I've found myself to like using champs like Sona, Janna, Lulu, etc and I've been having some success with it and reaching peak Master 2 but I'm at a point where I think I need to actually think about building items based on matchups instead of just using the standard build or copying the top 3 which from what I've heard is not really ideal.
Tldr, what exactly is their core builds and how does one adjust said build? Or should I just stick with more or less the same items every time.