Curses are a new type of enchantment that have a negative effect. For example the curse of vanishing causes the item to be destroyed if you die with it. These enchantments should cost significantly more to add/remove in the E+ table. Maybe the base formula X 5.

Curse enchantments have now been implemented. To access this feature the player must access the table near midnight on a night with a full moon. Curses cost 3X as much as a normal enchantment to apply to an item. Curses can also be removed for the same price.

The time window for working with curses is fairly forgiving. Players have two IRL minutes before midnight, and two IRL minutes after in game midnight to make their changes. Full moons happen once every 7 days, and are the first moon in the moon phase.