Complete Grandpa Joe's slightly exaggerated memoir about his youth.

My grandfather used to be a famous magician. He used to pull rabbits out of his hat every single Sunday!

My grandfather used to be a famous magician.

We use "used to" + bare infinitive to talk about past states that are no longer true.

He used to pull rabbits out of his hat every single Sunday!

We also use "used to" + bare infinitive to describe past habits or repeated actions.