7 Saddle Saddle is a keyword found on Mount creatures that acts similarly to Vehicles, and requires you to tap creatures equaling a certain power to activate their unique abilities
I didnt include any haste-enablers in my list, but you could add Thousand-Year Elixir, Fervor, or Tyvar, Jubilant Brawler to tap your creatures right away
Due to the large quantity of uninkable four-drops in this set, I pick them slightly lower in draft than their raw power level might suggest
Being able to pitch it to Kavu is nice, but you wont always have that option
And finally, the -11, which lets you search your library for any number of colorless nonland permanents and play them all for free
Maybe youre here for your Chromatic Orrery, Isochron Scepter, or Staff of Domination