Rarity: T2 · Very Rare — Uncommon enough to plan around rather than hope for.
What it does
Trigger socketed cold spells on melee crit — build around attack speed and crit cap.
trigger
cold
crit
Ascendancies that suit it
Assassin — A critical-strike specialist who lives and dies by the poison and the killing blow. 3.29's Mystical Infusion drags it back toward pure spellcasting.
Occultist — Curses first, questions later — chaos damage and hexes are the whole plan, with 3.29's Unhallowed Rite paying out for channelling.