Just make sure its Scarlet & Violet era if youre planning to play Standard maybe something like Shrouded Fable, Paldea Evolved, Twilight Masquerade, or Prismatic Evolutions?
If you have a lot of decks like that in your local playgroup, you can take advantage of the End the Turn part of Ultima to stop things happening after it resolves
You'll be discarding and drawing cards almost every turn with Sauron, so include creatures like Chasm Skuler, which grows when you draw cards, and Archfiend of Ifnir, which will punish your opponents when you discard
Booster packs are great for casual collecting or adding variety to your deck
She said all five of her children had a sealed box of cards, which had been bought by their grandad
Its reminiscent of Jeska's Will and Valakut Awakening, which are both very popular in the format