Grommit Fizzlewitz, a Deepwater Circle researcher, pointed out how the empowered Combine Spires in Teren's Grasp has attracted dynamist spren, but then he went on to explain how I might solidify the dynamist and then gather their stable particulates for even more energy.
Repeatable
Scales with Level
In order to solidify a dynamist spren, I must first craft a dynamist condenser.
Craft a dynamist condenser
I can now use my dynamist condenser to solidify dynamist spren in Teren's Grasp.
Gather solid dynamist particulates (in Kylong Plains)
I should return to Grommit Fizzlewitz, near the center of Teren's Grasp, with the solid dynamist particulates.
Quest Rewards above are only the guaranteed XP, faction, and coin rewarded for this quest. Status points and rewards limited by class, race, alignment, etc. are unavailable.