872 AE The Jade Wind
Caused by Shiro Tagachi’s death wail after he slew the Emperor of Cantha at the harvest festival. Okay so this one is all Abaddon. This is the earliest cataclysm I can find, and honestly don’t see any Dragon-based influence. But bear with me here let’s see the rest.
1070 AE The Searing
Caused by Bonfaaz Burntfur using the Cauldron of Cataclysms and the power of the Titans to rain burning Crystals destroying most of Ascalon. Now on the surface of it, this is clearly Abaddon's fault. Charr --> Titans --> Abaddon. Straight line succession. However there are a few things to note. Crystals seem highly indicative of Kralkatorrik's influence. And then there's the Cauldron of Cataclysms. From the Ecology of the Charr: "It is said the Cauldron’s magic was older than the Charr, older even than recorded history, and forged by ancient entities fallen into sleep and quiescence." Which seems to greatly imply elder dragons. Circumstantial and possibly retconned evidence, but evidence nonetheless.
1071 AE The Cataclysm
Caused by Vizier Khilbron who used the Lost Scrolls to cast a great spell that sank Orr beneath the waves in response to the Charr onslaught. This one is another "Abaddon's fault" since the good Vizier was supposedly an Abaddon worshipper convert and influenced by Abby's demonic servants. I don't find any explicit ties into dragons on this one, apart from the fact that the Lost Scrolls were forbidden texts hidden below Arah by the Old Gods. This seems to imply at least to me that the power that they contain predates the Six Gods and their gifts of magic to humanity. Mind you it may just be power of the Jotuns, or the Lupicus, or the Forgotten. Or the Elder Dragons. Kind of a stretch but it's there.
1090 AE The Foefire
Caused by King Adelbern when he shattered Magdaer (his Fiery dragon sword) in response to Charr attacking his city wiping out all who remained in the city. Man, the charr are involved in ALL of these so far. This one is even more of a stretch than the Cataclysm. All we know is that Magdaer (And Sohothin) are ancient relics dating back to a time when the Gods built Arah and lived in Tyria. Could be Old Power, but it could just be dramatic destruction and tied to the human gods not the dragons. Note that it's rather a smaller scale than the last two though
1219 AE The Rise of Zhaitan
Caused by Zhaitan waking up and causing Orr to rise causing a massive tsunami that destroyed Lion's Arch and the Battle Isles. This one is TOTALLY Elder Dragon's fault. No arguments please.
1320 AE The Dragonbrand
Caused by Kralkatorrik waking and flying south, creating a swathe of destruction and corruption. Another Waking of an Elder Dragon.
As a note, Jormag's awakening sent the Kodan and Norn fleeing south around 1165 AE but we know little of the lands up there so I did not include that as a Cataclysm. Call me Human-centric if you will. Nor did I see Bubbles' awakening and its effects on the Krait, Quaggans, Largo and Karka since we don't necessarily know that much about it. It should also be interesting to know that neither Primordus nor Modremoth seem to have caused particularly... violent awakenings.
So let the conspiracy theories start: