Currently stuck at 200 Blacksmith Desynth. Splendor items give either no increase in skill or about a .10 increase each time and are VERY annoying to get.

Tomestone gear is also difficult to acquire. It seems like items in Stormblood also have 0.0% chance to desynth.

I honestly don't know what I should desynth to get from 200 to say, 250?

What method should I use??