Amarite adds a new material to the game, Amarite!
This can be used to make various new items such as;
The Amarite Longsword A new sword which allows you to dash.
The Amarite Discs A trio of discs which you can throw at enemies.
The Amarite Mirror A mirror which can hold the power of a beacon or conduit and use it at a later time.
As well as other features such as a way to grow budding amethyst, beacon activation using tinted glass, and a way of poisoning food.