Alts that want Sparks of Shadowflame will need to complete the start of the Patch 10.1 campaign on every character to unlock the weekly quest as there is no skip available.
Spark of Shadowflame Quest
The Splintered Spark of Shadowflame can be obtained weekly from the PvP Weekly in Valdrakken or the A Worthy Ally: Loamm Niffen quest. Unfortunately for players that don’t like to PvP, this means that you need the A Worthy Ally: