<<I'm sorry but you don't. It's phrased as "use to be".>>That's just plain wrong. The correct English is "used to be." It expresses a past condition which lasted a long time but is now...
An invective is an angry, critical or abusive tirade directed at someone or something.
For example:
"A knave, a rascal, an eater of broken meats; a base, proud, shallow, beggarly, three-suited,...