For those who do not know, the exotic version of the Sclerite Karka Shell (tentacle monster backpiece) can be purchased with 1600 Festival Tokens and 1 Laurel in the Crown Pavilion. I know that you can upgrade this backpiece in the Mystic Forge to make it ascended, but can you infuse it?
http://wiki.guildwars2.com/wiki/Sclerite_Karka_Shell
Thanks in advanced!