Hello There
This Weakaura provides a list of Quests which can drop the "Skulls of the Executed" when the correct world quests are up.
No need to compare each quest to a list any longer, the weakaura does it for you.
If for example "DANGER: Durguth" is currently up, the list will instantly show it. No need to open map or anything. All you need to be is within Legion zones (or you remove that load condition, then it works everywhere)
If no matching quest is currently up, the list shows a custom option defined message.
If you want it to display nothing, change it to just a empty space in the custom options.
All the matching quests have been gathered via the wowhead wiki page, so credits to the comment section there.
Furthermore, the weakaura does inform you, if you are NOT on the correct quests in order to be able to gather the skulls.
Enjoy, helped me with my gathering of the skulls :)