▍ Display UnItem has two patterns to define a item, normal pattern and "itemsadder" pattern. Using the normal pattern, you don't need any other plugins, and you can custom the item's display name, lore, enchants and so on. Using the itemsadder pattern, of course you need to install the ItemsAdder first.Then you can use the itemsAdder items. UnItem's normal pattern has the dynamic display by sending the packets. It doesn't use the ProtocolLib API so you don't have to install the ProtocolLib.
This example uses the Placeholder as a extension.
▍ Skills UnItem has a own skill script engine. You can use it make almost all skills you want. It's simple so you don't need programming experience. The core of the skill script are selectors and actuators. Literally, the selector is used for selecting something, like items, entities or others. The actuators is used for actuate something, like killing an entity, reduce the item in hand, or perform a command. All the thing are up to you. Here are two examples: