Wardrobe Appearance: Mystic Cloth Cap

Mystic Cloth Cap

Helmet ~ Cloth

Available in game for free.

Crafted

Witchweave Cowl – Crafted by an Outfitter using Easy to acquire Mathosian Materials

Purchased from the store

Mystic Bundle – Bought in the Rift Store > Cosmetics > Costume Bundles > Classic, with Credits
Mage Standard Bundle – Expert – Bought in the Rift Store > Equipment > Bundles > World, with Platinum or Credits (Available elsewhere cheaper/free)

For a full list of appearances you can visit the Wardrobe Skins List.