Add chat message?

I was wondering if we could have what they get from the Lucky Block into their inventory show up in chat? I see the description in the config but that doesn't seem to show up in chat. I know it shows what they get above their Health bar but could we add a message to chat as well when they get something? That way if it's a custom item that they are unsure of the message will tell them.

Sorry, just realized you added multiple commands to be added. Disregard