To go other routes for draw, I would consider including Grothama, All-Devouring to attack/fight/"sac" a bunch of "excess" creatures for draw, or Skullmulcher does similar in a pure sac way, or perhaps Ohran Frostfang, Regal Force, Toski, Bearer of Secrets, Benefactor's Draught, Mind's Eye, War Room, and while Nissa, Voice of Zendikar is off the Elf theme, it's still effective for more than draw
The 2024 Mega-Pack set is comprised of 400 cards
cards both online and in-store
During Main Phase, choose an effect: reduce opponent's hand/Extra Deck cards or return your monsters to the Extra Deck, once per turn
Just because of the way that slivers were designed, it's unlikely that a Sliver deck won't seek to have every legendary sliver in it