It's be a good idea to point out exactly why you'll need to do that and what it'll cause. I personally know because I saw the discussion you had about frostbite, but...
I'll work on an index!
Good point. For those who weren't following my many struggles with the Arctic Wind spell, here are some key points:
1) It creates a spray of extremely cold liquid
2) This spray has a very short range (2-4 tiles)
3) When you use the spell, some of the liquid will get on you
4) Anything covered in the liquid that does not resist cold will come down with full-body frostbite, in addition to the custom "frostbite" syndrome on the liquid
5) The liquid will evaporate relatively quickly, at which point the (natural) frostbite will stop advancing; generally, this is just after the creature has lost sight due to its eyes being completely frozen
I've been experimenting with a transformation ability to be used as a last-ditch survival mechanism, which will give access to these and other spells. Unfortunately, if one uses the Arctic Wind spell close to the end of the transformation, not all of the spray will have evaporated, and one's original form will likely be exposed, causing both kinds of frostbite.
Anyway, new spell:
[CAN_DO_INTERACTION:MATERIAL_EMISSION]
[CDI:ADV_NAME:Ice Barrage]
[CDI:USAGE_HINT:ATTACK]
[CDI:BP_REQUIRED:BY_CATEGORY:HAND]
[CDI:MATERIAL:INORGANIC:CRYO:LIQUID_GLOB]
[CDI:VERB:launch a spear of ice:launches a spear of ice:NA]
[CDI:TARGET:C:LINE_OF_SIGHT]
[CDI:TARGET_RANGE:C:15]
[CDI:MAX_TARGET_NUMBER:C:15]
[CDI:WAIT_PERIOD:300]
This one's a lot of fun. I'm still working on balancing these spells, but Arena mode testing is hilarious.