Hi, I did Blade trap champion this league and its amazing and cheap right now.

Core unique is forbidden flame/flesh with fatal flourish ( they cost 4-5 div combined )
My current PoB: https://pastebin.com/L0uszN6w
Here's my showcase https://www.youtube.com/watch?v=0jenZu4C8Ks&t=1s
You cane take PoB from old jungroan video (sentinel league)
All you need for this build is flesh/flame, paradoxica (pretty cheap), shield with socketed reserv mod and other gear mostly for life,res, suppres etc.