Don't get too cocky with your Skites
In the case of the Black Lotus, for example, not only are there very few copies of it remaining in circulation, but it's a very powerful card
Next turn, these can bring in Gray Merchant of Asphodel, Puppeteer Clique, or Phyrexian Delver, which in turn can find Disciple of Bolas, Pitiless Plunderer, or Vindictive Lich
That means youre clearing the board while keeping your own threats safe, making it a tidy piece of value and aggression
The fact that its Blue fits the theme, but it also means youve got access to plenty of spells that will allow you to utilise this to either control the board state, your opponents hands, their library - or basically whatever else you want
Since Darksteel Citadel, Great Furnace, and Seat of the Synod are all legal in Commander