This is great when you want multiple decks, and means you only need 4 total Candy, Collector, Catcher, etc
The new Gold Secrets take all of that and add a Secret Rare Cards textured foil pattern on top of it
Most decks wont run Miltank, but those that do tend to include 2 copies of the card
And since blue is part of the mix, Izzet has access to perhaps the greatest creature removal spells of all time: Pongify and Rapid Hybridization
If you can think of a noob mistake that a little kid could make (running 60 card decks, prioritizing Life Points too heavily, or running cards that are too hard to use), then the chances are I've probably done that when I was that young
Graded Population Report: The One Ring [Foil] #246 Visualize the distrbution of grades in the chart