Alaynas description of the process involved with the middle three lands made me immediately think of the famous Sherlock Holmes quote about horses: Dangerous on both ends, and crafty in the middle. How many times, in both Commander deck-building and gameplay, do we know what to expect at both the beginning and the end, yet its the questions in the middle that seem to be the most intensive
As you might have guessed, these preview cards all fit well into a deck full of Sliver Creatures, but some of them also have cool uses elsewhere as well
One of my favorites being the card art for Melody, Sing-Along which both sets a scene and captures the essence of the hero
How often are you not able to counter an important spell because you don't have the mana you need open (or in the right combination of colors)
Some collectors believe their grades to be worth more than those of competitors like PSA, as they are more difficult to obtain