Howling Mine (T1, Ext, S) If any one card in Magic is the poster-child for card drawing, it is Howling Mine
If your commander has multiple triggered abilities, or a static ability and an activated ability with multiple conditions, that can just be overwhelming, and you wind up missing out on opportunities to do good stuff because theres just so many options
Group commons and uncommons by set if possible, since some older sets carry a slight premium over recent ones
Gate package: 10 Gates + Circuitous Route, Open the Gates, Gateway Plaza, Guild Summit, and Mazes End (total 14cT) 5x Panorama + 5x Mirage Fetches will get you any basics you need for 10 buddy lands to come into play untapped
A string of alarming murders streaks across the plane of Ravnica, and your players will step into the shoes of Ravnica's greatest detectives to track the clues and crack the case
Welder (UNB #189, 214): The card draw effect now occurs when Welder is used in conjunction with Eevee's Energy Evolution or Skiploom's Solar Energy