Turns on the automatic Item-Updater for a specific item. It is not totally recommended to leave this on constantly as always updating items may eventually cause lag if you have enough.
/mi drop <type> <item-id> <world> <x> <y> <x>
A command to generate and drop (essentially spawn in an item without putting it in a players inventory).
Cast an MMOItems ability (works with MM skills as well). There is arguments to select the ability, the player who casts it, and modify the values like damage and cooldown etc.
/mi heal
Similar to essentials/CMI heal, this heals you and removes all negative effects.
/mi info (player)
Opens up a useful chat menu with information about the player. This includes stats like class and mana (if applicable).
/mi list (type/spirit/ability)
Shows all available types for weapons,staff spirits, entities etc.