Quote Originally Posted by Gilphon View Post
Q52 If a creature that has resistance to a damage type gains vulnerability to that damage type, does it count as having both resistance and vulnerability, or just one or the other? So, for example, if a monster with resist 10 cold was hit by somebody using frostcheese, would they get combat advantage?
A52 They both apply. See page 224 in the Rules Compendium.