Master Frost Rune Schematic

The Master Frost Rune Schematic is found by revealing an obscure glyph with veilfire in Dragon Age: Inquisition.

Acquisition
The glyph can be found in three locations:
 * in Sahrnia Quarry in Emprise du Lion
 * in Echoback Fort in The Western Approach
 * in a cave North-east of Redcliffe Farms Camp in The Hinterlands.

Makes

 * Master Frost Rune