You have a “sixth sense” when it comes to noticing magic, and can identify when elemental powers have recently been channeled into weaves.
Secondary rank in at least one elemental power.
If a spell has been cast in the area within recently, you have the opportunity to recognize the residue of that weave. A weave leaves a residue for 1 hour per number of ranks of powers in the weave. A DC of 16 minus the feat-holder’s level successfully recognizes that a weave was cast. The feat-holder can identify which powers were used in the weave. If she has an equal or greater number of ranks in the weave she can also identify what rank the powers were used at.
This feat is considered a channeling feat for the purposes of Wielder bonus feats.