How to Configure Drop Rates and Random Quantities
Setting Custom Drop Chances
By default, adding an item assigns a 100% drop rate. To make an item drop less frequently, specify a drop chance value between 0 and 1.0.
Hold the item you wish to register in your main hand and execute:
/cemd addhand <entity-name> <drop-chance>
For example, setting a drop chance between 0 and 1.0 determines how often the item drops upon death. A higher number increases the frequency, while a lower decimal makes it a rare drop.
Configuring Minimum and Maximum Amounts
Instead of always dropping a single item, you can configure a mob to drop a randomized amount within a specific range. Hold the item in your main hand and specify both the chance and the quantity boundaries:
/cemd addhand <entity-name> <drop-chance> <min-amount> <max-amount>
When the entity is defeated, the game first checks whether the drop chance succeeds. If it does, the mod rolls a random item count between your chosen <min-amount> and <max-amount> values, dropping that amount on the ground at the mob's death location.