Balancing Oracle's Extract
It's to cheap for a item that completely invalidates stealth. The duration seems to last forever, and because its so cheap you can easily get it. And some abilities it completely counters. To put it simply its like how hourglass is to a zed, but always on (5 mins). It needs to be changed. My thoughts is to add a stack of detection, like 3, whereas it will detect 3 items max. If that's to heavy of a nerf you could also put the detection of CD, to which it will refresh after a duration.