Support Gems for Ice Spear

I use ice spear with faster casting, incrased crit multiplier, cold penetration, lmp, power charge on crit. I have additional spell damage/power charge and increased crit chance. Also use spell totem with ice spear. And this build only needs a tabula xd once you put down your totem turn on arctic armor and shoot some spears.. Mobs cant reach you... But as a disadvantage, you cant rush, and cant run through maps without killing. For me now 1rare mob 1shot if can be cursed with frostbite. Have fun