Lesser Glyph of Infusion

This glyph can be purchased from the following merchants: It is used to craft the following items:
 * Preacher in Electors' Square
 * Scoia'tael merchant in the camp outside Novigrad
 * Lesser glyph of Aard
 * Lesser glyph of Igni
 * Lesser glyph of Quen
 * Lesser glyph of Axii
 * Lesser glyph of Yrden