Which unit would you nerf? Why? What should be changed?
Try not to flame/be vulgar/insult each other/etc. Civil discussion is fine but ultimately these are /opinions/ and everyone is entitled to theirs.
If I had to pick one unit only, I would probably say Enchantress because it is incredibly hard to deal with a buffed Dragon/Ninja/Etc until after they attack, And when they do usually it’s your king.
In general, it just messes with your action economy greatly with fairly little counterplay.
I would suggest raising the morale cost for it.