Description
Increases your spell damage and healing by up to 15/30% of your Intellect.
Position confidence
row: Confirmed (talentsforever.com JSON + foreverchanges.pro tier listing); column & arrow: Reported (explicit only in talentsforever.com data/shaman.json)
Change notes
Icy Veins: 'up to 30% of Intellect'. Name reused from TBC. Same icon as Mental Dexterity in the fan data.