im ready to make my infinity and im thinking of going blizzard. even though i already have a 20 light dmg echutas w/o griffons. for cold damage gear no fathom or night wing but i do have a 15 cold dmg glacial spike ormus. Still havnt found the ohm i need for CTA. which is what ive been waiting for to respec. but i need some time to get used to my char before the RFL. im leaning towards blizz but i might be convinced to try lightning. my main question is what to do with cold mastery on a sorc with an infinity merc? Does it stack with conviction? if so it seem like it would be worth more points than without.