Dormant Dark Spore

 is an uncommon catalyst which can be used in the process of upgrading Adaptive Augments related to the Justice League Dark episode.

Obtained from

 * Chaos Gotham daily and weekly missions
 * JLD: Pub Crawl
 * JLD: Darkness Rising
 * JLD: Fellowship of the Arcane
 * JLD: Shattered Gotham

Trivia

 * ??? pieces of Dormant Dark Spores are needed to breakthrough milestone rank 15 of an augment.