Enemies in sight of your shadows can be targeted with skills even through walls. If the enemy is behind a wall, the targeting indicator from the wall onward is correctly colored red, but if you activate the skill anyway, it does land.
EDIT: Actually telepathy allows the same, so it's more of a problem with Dark Whispers and Agony.
[1.1.5] One with shadows: Shadow senses targeting exploit
Moderator: Moderator
[1.1.5] One with shadows: Shadow senses targeting exploit
Ghoul never existed, this never happened!