weapon animations and constant spell effects

with FF6usME I think there's the option of giving specific pieces of equipment certain abilities, like regen or haste... (I'm not sure, I don't use FF6usME a lot so others can help you better here)

The other way to do this is to inflict regen on a character by means of an event command. Example: Shadow's "dog block" is simply a status given to shadow at some instances in the game. This can be done with regen as well.