Monstrous Mondays: Undead Frost Giant

Just a few short days till the Winter Witch is out.  Here is another frozen fiend to throw at your players!  Again, the inspiration for this one should be obvious.
This is me, saving the best for last!

Giant, Frost, Undead
Hit Dice: 12
Armor Class: 2 [18]
Attack: 2 fist (2d8), weapon (3d8), frost breath (4d6),  Constitution Drain
Saving Throw: 3
Special: Undead; Energy Drain, Frost breath, Immune to cold
Movement: 12
Alignment: Chaotic
Number Encountered: 1d3
Challenge Level/XP: 14/2,600
The horrible undead frost giant appears much as a giant wight or draugr. Indeed they are the wights among the Frost Giants. Horrible as they are powerful, these giant creatures appear as frozen skeletons with bits of armor still frozen to their frames.
In their frozen existence they forget much about what they were so they tend to attack with fists or by whatever weapons they had when they died.  They do have two special attacks they can use. First is a breath weapon of cold air that can do 4d6 points of damage. That is the only attack they can perform that round and they can only do it every other round.  They also have a level draining attack that drains 1 level Constitution per a successful fist attack.  These creatures do not hurl rocks like their living counterparts.
These giants are usually found in great wastes and usually on the spot where they died. They typically do not have treasure save what they may have been carrying at the time of their death.
Undead Frost Giants are turned as Vampires (12 HD).

(