I have never dueled under 30 before. but just found a ether hammer Iron stone, stats seem legit.. I know you cant zod it. But maybe get some win with it till it dies... Is the eth Iron stone worth it? or Charsi?

yes you thought right, ethereal war hammer iron stone will make you unbeatable in LLD

which build were you planning on using your ethereal war hammer iron stone on?

Most GM duels don't allow breakable i think

Compared with honor runeword, not even close.
Have a look at some of the lld guides to get an idea of lld stuff.