Remember the quest named Kodo Roundup in Desolace? Where you have to use an item to attract 5 kodos. You will get a 5 minutes debuff when you round up one. When the 5 minutes are up, if you didn't deliver the kodo, it will despawn.
However, as a pally I used divine shield. The debuff dissapeared, and I was able to have a kodo follow me around the next hour in Desolace while doing other quests.
Totally useless of course. It won't help you fight or anything, but a dwarf being chased by a kodo is a fun sight indeed.
My guess is this would work with frost mage's iceblock, and other debuff clearing abilities.