Actually the plans can drop from any of the demons in this area - Felguards, Mannoroc Lashers, Searing Infernals. If you are doing "Destroy The Legion" and looting, it'll probably drop.
Quest
Diabolical Plans
A World of Warcraft quest in Ashenvale. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
Hello! I bring great news. On my level 19 twink I was trying to get this quest and I found after killing the Searing Infernals many times, it would not drop. I then accidentally killed one Roaming Felguard and it dropped on the first try. They are in the same area as the Infernals but I believe Blizzard must've changed which mob drops them.
I hope this helps.
Happy twinking ! :)
quest is not removed patch 4.0.3a
Quest facts
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(26443))
Requirements
Read from the Blizzard quest API.
Description
The demon dropped this parchment, which is amazingly written in the Common tongue! The ones mentioned in it, Diathorus and Gorgannon, are the two infamous dreadlords that control the demons hereabouts. The plans detail preparations for a demonic attack on Forest Song to the north, the location where a new draenei settlement is being established. Perhaps Vindicator Vedaar at the Warsong Lumber Camp would be interested in these?
Community notes from Wowhead · 17 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
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Reward details
Reputation: Exodar +75
The naaru vessel that brought the draenei to Azeroth. Though stranded in the Azuremyst Isles, it acts as a home city for this noble race.
Reputation group: Alliance.
Other quests in Ashenvale that reward Exodar reputation: Stopping the Rituals (+250), Destroy the Legion (+250), Never Again! (+350), A Helping Hand (+25).
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.
Where this quest fits
Other quests with this name
This one: Alliance only · Ashenvale · Level 7-30.
Steps, storylines and map placement from the client’s QuestLine, prerequisite and QuestPOI data; neighbouring quest text is Blizzard’s own (quest API), shortened to its opening sentences.