The deck has a respectable average mana value of 3.73, which is pretty low for precon
When it enters the battlefield, you can search your library for two basic Plains cards
Despite making just a Mono-Blue Spellslinger deck with Talrand as the leader, he is still leading 4,263 decks with that color issue, and he's in a massive 74,049 in the 99 for beloved Izzet and Jeskai Spellslinger (#9 at 50008 decks)
For example, if you choose a land that's become a creature, all your other creatures will become noncreature lands until end of turn
Manifesting dread can put any card face-down, so not only are you not sure what youll be attacking into, you dont even know if it can flip at all in the first place