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.

Borrok the Devourer

Feed him 10 Ogres
Drop: Carapace Shield of the Devourer

Coldtusk

Drop: Cold Tusk

Firefury Giant

Click the Fire Stone to awaken the Sleeping Giant
Drop: Firefury Spirit

Gargantuan Frostbeak – not sure if this one still exists

Giantbane

Gruuk

Only available before you build your Horde Garrison
Drop: Gruuk’s Evil Eye

Moltnoma
Pale Fishmonger

Skorr the Soul-Gorger

Slogtusk the Corpse-Eater

Son of Goramal

Uglok the Frozen

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.