I am fully aware of the 2003 army spell list but the Ice Witches don't have a standardised tradition at the moment. The Ice Court is an ephemeral concept not an organisation and they operate entirely master to student, so "spell list" isn't much of a thing. As such, I'm assuming that they have more of a dynamic system, and as such I'm pulling from TW, which has a bigger list. I'm not under the impression that Ice Witches are somehow restricted to spells from "Tempest" or "Ice", but I do assume that they have more spells in their toolbox than the six in the 2003 list. It also helps that a lot of the spells from TW are just straight ripped from Realm of the Ice Queen, which is 100% a source that Boney uses.