I can see spells like freeze floor, and the barriers always activate and depending on power its how strong it is. But spells like subzero dont seem to happen more often the higher the caster is to target. With 131 arcane 107frz it occured equally between a lv 15 and level 50.
Im guessing it works out to be if your power is over their protection it rolls dice like ive seen you say before. But wouldnt it be the more your over their protection the more dice numbers there should be to activate the effect? Also are these spells off base only or mods aswell?
For now the subzero spell works purely based on a dice roll with a arcane power vs protection modifier: 1d20, - ((arcane protection -arcane power)/7). Arcane shield blocks the effect at the cost of 1 charge. Imm vs frz check is not working properly, but will be fixed at next balance update.