I know this topic has been done to death before but since the search function doesn’t work and in light of Scarlet making this kind of speculation relevant again I thought I would bring it up. – I also apologise in advance for the formatting and density, I’m going to assume that it might be a bit of a kitten to get through.
There have been theories going on for a while now about several in-game foes that may have been corrupted by the Elder Jungle Dragon (who we all fondly refer to as Mordremoth and I will continue to do so from this point onwards).
Exhibit a) The Great Jungle Wurm in Wychmire Swamp, most of us are familiar with this event and the ominous dialogue hinting at a “darker force” in the jungle.
Accompanying the GJW are Summoned Husks and Nightmare Hounds so we have obvious links to the Nightmare Court, as well as a hint that this goes beyond them.
With the most recent living story update we saw the introduction of exhibit b) the three-headed Wurm (although to be honest I’m not really sure how we know it’s three headed rather than just three separate wurms? Is there an explanation for that anywhere?). The three Wurm heads are accompanied by husks which suggests that there could be a connection between this new Wurm and the GJW of Wychmire Swamp. With this I want to point out the lack of Nightmare Court presence in the new event, my personal feelings here are that the Nightmare Court have been corrupted by Mordremoth in some way, but since the Sylvari bare no direct relation to Mordremoth the lack of NC presence in the new Wurms events isn’t of particular note (Sylvari are not minions of Mordremoth, the Pale Tree is NOT a dragon champion – I personally suspect that the Nightmare is a form of dragon corruption that allows Mordremoth to gain a foothold on the Dream and corrupt the Sylvari, circumventing their immunity).
It seems plausible that these Wurms could be champions of Mordremoth, given that they are able to call minions (Husks, Nightmare Hounds and Wurms) into battle with them and given that the fights against them are akin to the Tequatl fight (although that alone hardly proves anything).
From here I want to look beyond the Wurms to two other instances of possible corruption (both of which have been remarked on before). Exhibit c) the Champion Rotting Ancient Oakheart in Queensdale. There are a couple of things of note during this event; the first is the environmental effect (visual rather than a mechanic) which is to my knowledge seen only in one other place (in Ogham Wilds), the second is the presence of “Tree Parasites”, and thirdly the notion of corruption and the need to destroy the corrupted creature in order to stop the spread of said corruption. It seems as though both the parasites and Oakheart have the ability/potential to spread corruption, and as with other dragon minions they need to be destroyed in order to ensure that the corruption is not spread. Whilst this event doesn’t present us with anything conclusive, I think that when considered in relation to the event which I will mention presently it is definitely important.
Exhibit d) the Veteran Nightmare Mosshearts in the Ogham Wilds. These Mosshearts have been corrupted by the Nightmare Court and need to be destroyed to prevent them from further corrupting the surrounding wild life. Of note is Arias, a nearby NPC, saying “Once turned, the mossheart would never have broken free from the vile hatred of the nightmare. We had no other option but to destroy it.” as well as “When the Nightmare Court’s influence takes over, it can never be purged.”