Lost Dredger

The headline's a little misleading -- it's not actually a treasure goblin, and also it's not technically a goblin, but it's still pretty cool -- but these new Lost Dredger mobs that spawn in Torghast allow you to farm up a lot of Phantasma and can even drop an Anima Cell letting you get even more Anima Powers, which makes your time spent in Torghast a lot easier and more fun.