If a player or permanent has more than one kind of counter on it, and you choose for it to get additional counters, it must get one of each kind of counter it already has
Spirit of the Books- Have 6
It effectively shields your cards from scratches, water damage, and other potential hazards, keeping them in pristine condition
Frosmoth can come out quickly, and if youre lucky with your coin flips, that Pokemon will stay asleep for a few turns, letting you swap out with another, stronger Pokemon or keep whittling away at that HP
In the Kaladesh parts of red (as well as on the blue cards), there is a whole lot of Thopter making
Snappy is another card that can be only found in retro frame in the set, with normal versions from previous prints found between $15-20