Which quest gives purple dragon commendations?

[ddonoobgamer]

I read that doing the king's forest wilderness area is the fastest way to get commendations. Unfortunately for me, I seem to be getting everything EXCEPT purple dragon commendations.

So I've given up on that and will just go the quest route. Can someone list the quests that has given them purple dragon commendations?

[sandypaws]

Pulled one in one of the orange-named chests from a quest in the first chain. Can't recall the name right now, but it's the one where you light bonfires, defend the village against a drow attack, and end up fighting a giant spider critter followed by its ranger-rider.