Artisan's Acuity and Spark of Starlight Guide for The War Within

The Spark of Starlight is a rare reagent that serves as a time gate to Season 3 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 691 item level, but you can add the optional reagents Enchanted Runed Ethereal Crest or Enchanted Gilded Ethereal Crest, bought from the Enchanting vendor, in order to make them go up to 704 or 720 item level at maximum quality!

There is also Enchanted Weathered Ethereal 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 675 item level.

To summarize:

Crest	Enchanted Crest	Source	Item Level Range
Weathered Ethereal Crest	Enchanted Weathered Ethereal Crest	LFR Awakened Raids and World Content	662 to 675
No Crest	Spark of Starlight alone	Weekly Dornogal emissary world quest	678 to 691
Runed Ethereal Crest	Enchanted Runed Ethereal Crest	Heroic Awakened Raids, M+ from 2 to 6	691 to 704
Gilded Ethereal Crest	Enchanted Gilded Ethereal Crest	Mythic Awakened Raids, M+ 7 or higher	707 to 720

Spark of Starlight, while limited in availability, 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 (at 20 per recraft) 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.