The fastest way to get a Spark of Radiance in WoW Midnight is usually the weekly spark quest with the quickest objective, which appears to be the Arcantina/Arcanetine-style option that can be finished in under a minute by using drinks on other players. The other reliable routes are the weekly spark quest options like Delves, Dungeons, or related weekly Apex Cache quests, and catch-up sparks can also come from max-level content if you miss a week.

Fastest route

  • Pick the weekly spark quest that can be completed the quickest, usually the Arcantina option. It is described as taking less than one minute.
  • If that option is unavailable, choose whichever weekly objective you can finish fastest, such as Delves or Dungeons.
  • If you are behind on sparks, keep doing max-level content because catch-up sparks can still drop from activities like Delves, Mythic+, raids, and instance PvP.

What to do first

  1. Finish the campaign on at least one character, since that unlocks the spark system.
  1. Grab the weekly spark quest in Silvermoon or the main hub area.
  1. Choose the shortest objective available, then turn it in for your spark.

Other quick sources

  • Weekly quests tied to Apex Caches can award sparks, even when the reward is not obvious in the quest text.
  • A PvP-related Sparks of War quest is another option if you already play in War Mode or battlegrounds.
  • If you craft, you can use the spark directly for crafted gear; if not, you can submit a crafting order.

Practical answer

If you want the absolute shortest path, do the weekly spark quest and pick the Arcantina-style objective first. If that is not available or has changed, go for the fastest weekly quest you can complete in a few minutes, then rely on catch-up drops from your normal endgame activities.

TL;DR: Fastest = weekly spark quest, with the Arcantina option being the quickest reported route; otherwise do your normal max-level content for catch- up sparks.