EternisStarrySky

Fixed a bug in the Flower of Bygone World server where the game mode couldn't be switched.

Updated the textures for the following items:

Flower of Bygone World

Fruit of Purity

Primal Stone

Star of Creation

Added Nether Core, now used to upgrade armor at the forging table instead of being a crafting ingredient.

Changed the shader texture of the Sword of Cosmic Dominion to rainbow-colored rendering.

Added an unfinished shader-based aura effect (currently WIP).

Since the current boss is only a placeholder shell and cannot be defeated, added Mystery Biscuit to clear nearby bosses.