I've ignored most of the Nexo Knights sets but 72004 is incredibly badass. It's got a Warhammer style power armor inside a mech! Got it for $32 on Amazon. : r/lego
LEGO 72004 Tech Wizard Showdown Set Parts Inventory and Instructions - LEGO Reference Guide
Brickfinder - More LEGO Nexo Knights 2018 Sets In The Wild