Winter wolf

From Ardrana

The most dangerous member of the species, the winter wolf is known for its great size and foul disposition. Living only in chill regions, they can unleash a stream of frost from their lungs, causing damage to everything within 10 feet. Cold-based attacks to not harm the winter wolf, but fire-based attacks cause additional damage.

Winter wolves are more intelligent than their cousins and, in addition to being able to communicate with worgs, have a fairly sophisticated language of their own. The winter wolf is beautiful, with glistening white or silver fur and eyes of pale blue or silver. If in good condition, a pelt is worth 5,000 gold pieces to the right buyer.

Note: Winter wolves originally appeared in this form in the 2nd Edition Monstrous Manual for the AD&D game from TSR. Their use here is for the purposes of providing context for the campaign only.