Time for a capstone!  LOTS of crafting feats, so you dont need as many for this one!

Effective Crafter Feat 20

General Skill
Prerequisites legendary in crafting

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You know exactly what you need to do and the exact minimum to get it done.  Reduce the cost of materials to craft items you re able to craft by 1/3 their normal cost, rounded down.  You must still meet all other crafting criteria and time requirements.

Thoughts?