Fade-Touched Wyvern Scales is a Tier 3 type Masterwork Leather Crafting Materials in Dragon Age: Inquisition (DAI). Materials such as these are found in the field by harvesting, defeating enemies, completing quests or obtained as a reward for War Table Missions.
A masterwork material is used in some Schematics that have a "masterwork slot". These materials provide special effects that no other crafting material can provide in any other slot and are very powerful in comparison, with possibilities such as greatly increasing critical crafting (+10% to final item stats).
Fade-Touched Wyvern Scales Effect
On hit: 15% chance to apply poison 10% chance to cast fear on a hit