Ice Elemental Blizzard

When my players reached 13th level, I gave them a choice: drow or giants.  They chose giants and headed up into the Spine of the World looking for some.  So I set up a couple of encounters built around giant raiders and then needed to come up with a raider chief.  My first cut was a frost giant, surrounded by ice elementals, but lo and behold!  There aren't any ice elementals in 4e.

So I built one, and here it is.