The easiest way to think of it is this: if you know you always want to see at least one copy of a particular creature or spell (or anything else) each game, then you want four of it
Cards on The List appear about 25% of the time in the last card slot of Set Boosters, and all rarities are represented, from commons to mythic rares
At the time, Obzedat, Ghost Council was tearing up Standard quite a bit and a lot of people thought Blood Baron would be somewhat winmore, would rarely buff up to max power, and wouldn't be as useful in Constructed
Players can use the guides to easily catalog their cards by set
2: Create a 0/0 colorless Construct artifact creature token with "This token gets +1/+1 for each artifact you control." 1: Put a card you own with a silver counter on it from exile into your hand
And because in Russia we live poor lives in old houses where we burn firewood, ride steamrollers and dem bears steal all the food, eventually I had to give up on one color