Name: Bag of dices or W 100
Type: Unique Item
Description: Gives the User +1 Multiluck
Lore: Divine intervention.
Would be a nice addition, I am not sure if the thing is balanced enough with -50 Luck, maybe it should be even more. But as you are not able to gain much luck past about 300 without making a huge effort, it seems right to me.
For the name - I am struggling to choose between a bag of dices or the Dice with 100 sides (D 100)