Spark of Omen is the new crafting reagent to upgrade crafted gear in The War Within. This item increases gear to 584-597 ilvl.
You will get your hands on Fractured Sparks of Omen and you need 2 of them together with 250 Valorstones to make it into a Spark of Omen.
How to get Fractured Sparks of Omen
These Sparks comes from a wide variety of sources and all of them are tied to Meta Quests. Meta quests are endgame weekly activity quests and there are 6 Meta quests per week. These are:
Weekly World Soul Aiding
Weekly Delve
Archives (This could be every 2nd week, not confirmed)
Weekly Severed Thread Pact
Weekly Theatre
Awakening the Machine
It seems that you can get 2 Fractured Sparks per week. You can see if the meta quest rewards a fractured spark by looking for the "Weekly Activity" symbol.
