This spell will go on a cooldown every time you are transported or teleported, whether it was due to this spell's effect or not. It will fail to reactivate from a distance greater than 8 tiles.
Shadowstriker leaves a shadowy distortion at his current location. This shadow lasts 6 seconds. While the shadow is there, shadowstriker can re-activate this spell to be teleported to the position of the shadow and deal damage to the enemies standing in its close vicinity.