The big challenge is the hoops you have to jump through, as hitting with a 2/2 without evasion or haste isnt trivial, and theres also the saddle 3 cost
Remember that golden rule: Prototype is irrelevant if you arent casting the card and it's not on the battlefield
They might be cooks, farmers, clerks, or guides, equipped with tools of their trade (give them fruit/vegetable themes, such as a trowel made from a melon slice
Despite how long the creature type has been around, there is actually a rather small number of Rat cards, with only about 100 Rats in all of Magic
Getting a group of Magic players to agree on anything is almost impossible
These Artist Proofs, which include the Eyes, Path and Mushroom varieties of Forest, are easily recognizable by their blank backs and highly desirable to collectors