• Upon use, spawns 3 to 5 enemies. If opened, it will spawn a gun or item . The Lament Configurum must be used a certain number of times before it is successfully opened, and each time it spawns a gun or item, the number of uses it takes to open increases by 1. It always spawns rewards on the 2nd, 5th, 9th, 14th, 20th, etc. uses. There is a 25% chance that it will damage the player upon spawning a gun or item. Damage starts at one heart and increases by half a heart each time the player is damaged by the item.
• Items and guns spawned will increase curse by 1 when picked up.
• Items and guns spawned will be , , or quality.
• Increases curse by 1 while held.
• Increases magnificence by 1, despite being a item.

• Heart-Shaped Box - If the player has [Heart Lunchbox] , Lament Configurum will heal the player instead of dealing damage.
• Possible enemies spawned include Ashen Bullet Kin , Fallen Bullet Kin , Creeches , Executioners , Bloodbulons , and Poopulons .
• Lament Configurum is sold for the price of an item in shops even though it is a item. Flynt does not sell it for an increased price.
• Armor absorbs one hit regardless of damage, so Lament Configurum can only deal one point of damage at a time to The Robot .
• Damage dealt can be prevented by items such as the [Riddle of Lead] .
• Using this item 20 times unlocks the [Bloody 9mm] .
• Lament Configurum is a good way of obtaining multiple high quality items and weapons in a run.
• If the player wants to avoid obtaining lots of curse, it is not recommended to pick up items or weapons spawned that may not be useful, such as the [Shelleton Key] when the player already has enough keys.
• There is an unused variable in the Lament Configurum's code called 'ChanceToEyeball', permanently set to 0.001. It is unclear what 'Eyeball' was originally supposed to do, beyond being extremely rare. It is possible that the Lament Configurum was originally supposed to take the player to the secret Eyeball Room that the [Teleporter Prototype] has a small chance to grant access to
• If the item or gun spawned is then traded with the Resourceful Rat using the [Ring of the Resourceful Rat] , the new gun or item will not increase the player's curse upon pickup.

Rescue Daisuke .