Improves physical armor rating and provides ice damage mitigation from enemies. Slightly increases the regeneration speed of all combat arts within the aspect Mystic Stormite while the buff is active. Crystal Skin cannot be used in conjunction with Incandescent Skin.
Provides a surprisingly large amount of physical resistance, especially when used with Armor Lore.
The Mystic Stormite Expertise gold mod provides a scaling regeneration bonus that will improve with additional runes. This is most useful early in a character's life when regeneration time balancing is difficult. This mod becomes less useful over time however, as the Crystal Skin CA has a built-in reduction of Mystic Stormite regeneration times already, and the natural progression of a character in higher levels means drastically decreased regeneration times in general.
The Frosty Breeze gold mod provides a scaling damage bonus that will improve with additional runes. This is most useful late in a character's life when a percentage based increase in damage means tens to hundreds of points in additional ice damage.
The Focalise mod increases spell intensity for all Combat Arts, not just Mystic Stormite.
Pros and Cons
It will directly reduce the regeneration times for the Mystic Stormite aspect
Good spell reflection bonus
Great ice damage mitigation
Harms the regeneration times of all combat arts
Slightly difficult to balance between level and combat art regeneration times
Temple Guardian's CAs Fiery Ember and Icy Evanescence increase target's vulnerability to Ice or Fire; High Elf's Buff Crystal Skin has Feel Cold modification that causes all targets in close vicinity to the caster to be more vulnerable to Ice Damage. These CAs cause all enemies in Area of Effect to have modifier "Damage Vulnerability Ice/Fire +x%" which not only removes these enemies' resistance to Damage but can decrease it below zero, causing CAs to deal more damage than the value stated in CA description. These CAs do not affect target's Armor, but decrease Damage Mitigation modifier by fixed percentage (not by percent of target's mitigation like Ancient Magic).