Rift World Event - Harbinger of Alsbeth
"Captured footage of our raid defeating the boss at the end of a River of Souls event, using the in-game video feature.

Afterwards, I was so focused on checking out how much planarite I received, my eyes swept right over the fact I had also looted the Spectral Horse mount. There it is in the loot window, but I didn't notice it in my inventory until about two hours later when I went to vendor my trash!"