By paying attention to your mana curve, you can increase the likelihood of having playable cards at every stage of the game, leading to a more effective and enjoyable deck
This allows you to leave mana open for the longest possible amount of time in case something particularly nasty tries to ruin your day
Choosing which ones to put in your deck and which to leave in your sideboard (any cards that you don't play in your main deck automatically make up your sideboard in Limited) is one of the big skills in Limited
We would later change it to be an Elemental
And while most of the lands are fairly ordinary basics, one in each booster matches the theme of the booster, and some (like the Phyrexian Swamp) are collectors items
Well identify the first edition version of rare cards, the prices collectors pay for them, and whether picking up the same cards could be a good investment