Abundance Advice

I have a number of alts with different professions, and getting abundance on them hasn't really been an issue (patron orders give quite a bit).

However, my enchanter has been really suffering. I haven't been getting any Shards of Dundun from patron order rewards.

Not too keen on doing WCs on yet another character.

Has anyone figured out what the best way is to get shards? Could I get some tips?