Added three new artifacts, those being Cursed Lead, the Soul Stone, and the Clean Slate, as well as achievements for each of them (minus the Soul Stone, that is).
Added a new status effect called "Curse of Everlasting Despair". It can be activated by right-clicking while holding Cursed Lead, and gives you every negative status effect in the game while active, including Bad Omen, so be careful not to use it inside a village.
The Clean Slate clears every status effect you have, regardless of whether they're positive or negative. It has three uses.
The Soul Stone gives you night vision and a speed boost for 10 seconds, and it also restores a bit of your hunger.
Rage Stones are now immune to fire and lava.
Changed the name of the "Have You No Heart?" achievement to "Have You No Soul?".
Added three new paintings, those being "Everlasting Despair" (1x1), "Art of War" (2x2), and "The Icon" (1x1).
Added a soapy sponge. It's only used to craft the Clean Slate and it converts back into a wet sponge when used in the crafting table.
Complexity Swords is a parody of Simply Swords. Please report any bugs you find and send any suggestions to me on my Discord, shadowepicgamer3375, or in the CurseForge comment section. Not recommended to be used with OptiFine.