Collector Boosters are jam-packed with special goodies. Since this article is about going in-depth, let's get real granular. I even have an image. I don't know how to make these images, but it turns out if you just type "make this an image" the person who converts documents into web pages will get an image made for you.
Collector Booster Contents (Make this an image. Thank you.)
Each Collector Booster comes with 4–5 rares or mythic rares, 7–9 special-treatment cards, and 11 foils! These packs are perfect for players looking for the most exciting pulls possible.