Sculpting Steel Sculpting Steel has become a mainstay in artifact-themed Commander precons
Games were coming down to who drew their Skullclamp or could keep it on the table, as that player would quickly have twice as many cards
You won't scry, and you won't draw a card
(Some of them would take up more room than we have in the text box by themselves, but you probably won't control that many lands.) In case you do end up with more than 31 lands, the remaining prime numbers below 100 are 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97
I also have Icy Manipulator to tap a flyer prior to swinging and Horn of Deafening to prevent it's combat damage
Even if you dont have the perfect cards for your sideboard, thats okay