Expensive, big-mana cards, ramp payoffs, or cards that care about having many lands in play are very interesting here
There are two variations, with one set featuring Bulbasaur and Pikachu, and the other featuring Charmander and Squirtle
Whenever one or more Dragons you control deal combat damage to a player or battle, look at the top three cards of your library
There isnt a ton you can do about it, but think about what ends up under your exile enchantments
Insist Guarantee your creature resolves and draw a card
Granted, not all rare cards will be valuable, as they also have to reach the competitive or aesthetic standards that players and collectors have, respectively