I don't know if it is because I am running with an Abyssal Chicken active at the same time, but I keep crashing to desktop when I use Ring of Fowl Weather with the Vortex from the Legendary Carpet and Onslaught.
EDIT: Just happened a second time in less than five minutes it seems. Abyssal Chicken's Swarm was active and procc'ing when I used Vortex, Ring of Fowl Weather, and Onslaught. Game crashed to desktop again.
EDIT: Abyssal Chicken was not summoned, but it crashed to desktop again when this same combination was used, minus the abyssal chicken.