If Curie is no longer on the battlefield when its first ability resolves, use its base power as it last existed on the battlefield to determine how many cards to draw
That probably limits his upside quite a bit and, as a result, if he sees play, it's probably as a 1 or 2-of in select decks
The amount that works for you heavily depends on the size of your collection, your preferences for power-levels, your common playgroups, and mostly how often you get to play Commander
Each Play Booster contains 14 Magic: The Gathering cards
1 2 "Gorgeous Rydia Painting Is Gorgeous"
I slipped basic lands in to leave lots of room for improvement after your learn how many lands to use in Commander, but you can pick your favorite 5-color commander and go ham