In that deck, thats for drawing cards, as removal fodder for Rite of Oblivion and Ruthless Lawbringer, or to make my creatures nigh-on unblockable with Shadow Alley Denizen
Both of these are worthy of being a three-mana spell on their own, but having them both on one card makes this a great card against a lot of different decks, and you can play it without worrying about what it is your opponent might be doing
His ascension to the role of editor in chief of the Capenna Herald was no less brutal for its bloodless achievement
As such, unless Wizards announces that Secret Lairs will always come with a valuable bonus card, it's probably best to not expect any extra value and get a happy surprise if your drop happens comes with a bonus card on the level of Liliana, Teferi, or Jace
It also has plenty of removal spells in Casualties of War, Putrefy, and Tear Asunder, if a particularly pesky Voltron player is threatening to block one of your many, many little critters