Vignettes are a new type of silver dragon found in Warlords of Draenor meaning they lose their ‘rarity’ the first time you kill them. Unlike the Timeless Isle, you won’t need to farm a mob over and over since their unique item is guaranteed to drop (as well as a number of garrison resources). Just keep an eye out for any skull in the vicinity and you’ll be sure to see them all in no time.
Gargantuan Frostbeak – not sure if this one still exists
There are also a number of events (marked by a sword) and treasures to find so be on the lookout for anything unusual.This list is subject to change.