Spirit Dust is the most-used crafting material in Witchspire. This guide covers the fastest Spirit Dust farming routes in Patch 0.1.4 — for solo and 6-player co-op.

The fastest Spirit Dust farm in Patch 0.1.4 is the Veiled Steppes Luminary circuit. The route is a 4-minute loop that hits 6 Luminaries, and each Luminary drops 25–50 Spirit Dust.
With a solo Emberkin build, you clear the circuit in roughly 4 minutes for an average of 220 Spirit Dust. With a 6-player co-op group of Emberkins, the same circuit takes 5 minutes and yields an average of 1,200 Spirit Dust.
Every boss kill drops 100–300 Spirit Dust. The Spire Arbiter drops 500. Boss kills are slower per Spirit Dust than the Luminary circuit, but they’re a good break from grinding.
The Coven Keeper at your Hearth gives a daily 200 Spirit Dust for completing 3 Coven quests. Pick this up every day.
The Hearth Hound auto-kills small mobs within the Hearth radius. With a max-level Hearth Hound, this gives ~30 Spirit Dust per hour passively. Not the main source, but free.
Spirit Dust is needed for nearly every crafting recipe. The most important sinks are Hearth upgrades (see the Hearth upgrades page) and Familiar Evolution Tokens. Avoid spending it on consumables that you can farm elsewhere.