It's in guide
Skills: 1pt moonstrike, all skills 1pt until antimass, all cold and lightning skills 1pt. Then max familiar (in 4-skill increments, but probably does not matter, because you have more than needed skills until +1 max skill lvl charms), warp armor, snow queen, frigid sphere. Remaining points balance between ice elementals and forked lightning (until you hit projectile cap, which will be early). After lvl90 - all skills 1pt, as uber choice pick witchblood.
I tested with my non-ladder copy - it still very viable late game, it can do most ubers alone without problems. Not all, but....