Heart of Shadow

Acquisition
Skill trainers
 * Michiko (Kaineng Center)
 * Zytka (House zu Heltzer)
 * Akane (Senji's Corner)

Note

 * The shadow step distance is actually longer than nearby, close to earshot range.
 * Target can be ally, self, foe, signpost, chest, item, etc.
 * When targeting yourself, you'll step in a random direction.
 * Can be used to enter explorable areas and unexplorable areas including towns when cast on a item or player, making Cartographer a much easier title and often exploiting previously unexplorable parts of a town.