Artisan's Mettle and Spark of Ingenuity Guide for The War Within

The Spark of Fortunes is a rare reagent that serves as a time gate to Season 2 combat crafting gear in The War Within. You can get them by doing one of the open-world weekly quests given at the center of Dornogal.

By default, items created with the Spark can go up to 645 item level, but you can add the optional reagents Enchanted Runed Undermine Crest or Enchanted Gilded Undermine Crest, bought from the Enchanting vendor, in order to make them go up to 658 or 675 item level at maximum quality!

There is also Enchanted Weathered Undermine Crest, which can be used on basic gear crafts such as Malleable Band without a spark in order to get the gear to up to 629 item level.

To summarize:

Crest	Enchanted Crest	Source	Item Level Range
Weathered Undermine Crest	Enchanted Weathered Undermine Crest	LFR Awakened Raids and World Content	616 to 629
No Crest	Spark of Fortunes alone	Weekly Dornogal emissary world quest	632 to 645
Runed Undermine Crest	Enchanted Runed Undermine Crest	Heroic Awakened Raids, M+ from 2 to 6	645 to 658
Gilded Undermine Crest	Enchanted Gilded Undermine Crest	Mythic Awakened Raids, M+ 7 or higher	662 to 675

Spark of Fortunes, while rare, are easy to obtain. You will be able to create one right away in the first week from the starter quests and can obtain another one every other week from there on, allowing you to have a new spark ready for crafting every other week!

Artisan's Acuity is a rare reagent used for Recrafting and for high-end profession crafts, most notably in the profession best in slot gear crafts, which require over 200 Acuity per craft!

If you are a crafter, you can get some from Patron NPC work orders, with the rest being obtained from gaining Profession Knowledge points (5 Acuity per point gained) and First Craft bonuses, which are awarded every time you craft an item you have never crafted before.