Ghost Mask

Only Goodie Bags contain it, and those only fall while the Halloween season is running, from ordinary enemies rather than any particular one. That makes it a numbers game rather than a hunt: find a spawn you can clear quickly, collect bags for an evening and open them in bulk. No recipe, no shop, no other route.

Most vanity is purely a skin. This one changes what happens when you die. Instead of the usual scatter of gore, the sheet drifts down and sinks into the floor, and the severed remains never appear at all. The outfit is also part transparent while worn, which fits the idea that the character was already a ghost before anything killed it.

There is a Ghost Mask and a Ghost Shirt, nothing below the waist, so the legs are your problem to solve. The shirt has been reworked more than once on that point and currently leaves the legs bare rather than drawing anything over them. If you want the illusion finished properly, wear Shroomite armor underneath and hold still: the stealth fade stacks with the transparency and the character nearly vanishes.