Unobtainable features

Unobtainable Items are various items unavailable in the game through regular play for various reasons, ranging from copyright liability to exclusiveness. They're only accessible via third party modifications to the game. The more popular among them are the vanity armor sets that the developers of the game have reserved for themselves.

Trivia
The item code for the Icemourne and the Scythe are now Boreal items, and the Soul Scythe is now the Red Potion.