[GAMEPLAY] Duskblade ON HIT PASSIVE(!) tells you that youre on a ward

Duskblades on hit dmg passive tells you, when you're seen by a ward.

Duskblade anti-trap passive ON CD. Walking through jungle. NO STEALTH UNITS ON ENEMY TEAM. I had the timer for the 5 seconds that i get the dmg buff start ticking, so I knew that in a certain area, there had to be a ward. 10 seconds later a friend came and sweeped it to prove me right. So basically, I knew where they would see me and where they would not, happened 4 times this game. Forgot to record it.