Gate to Phyrexia, Chaos Warp, Tithe, and other ways colors get to do things they ordinarily can't make it easier to build decks exclusively using that color
That means, you start playing the game
Enchanted creature has "Whenever another creature dies, put a +1/+1 counter on this creature." When enchanted creature dies, look at the top X cards of your library, where X is its power
Nadu, Winged Wisdom Nadu, Winged Wisdom also enters broken territory, with ramp potential so unbounded that it almost immediately ruined formats and subsequently hit the banlist
Consequently, it behooves Internet bidders to avail themselves of any and all additional terms and conditions that apply to these proxy services
Instead, Mono-Blue often wins by drawing four cards, untapping three permanents, copying a spell, flickering an Artifact multiple times, and then saying, "I would like to present an infinite loop from here." And to help you get to that point in the game, a great Mono-Blue Commander should be able to give you repeatable value in one form or another