Each pack contains 12 Magic cards, including 1 Mystical Archive card (Uncommon, Rare, or Mythic Rare), 1 Lesson card (Common, Uncommon, Rare, or Mythic Rare), 1 Rare or Mythic Rare, 1 foil of any rarity, 1 Wild Card of any rarity, 6 assorted Commons or Uncommons that are thematically connected (with Commons connected to other Commons and Uncommons connected to other Uncommons), and 1 Land cardplus 1 Art Card and 1 Ad/Token or special card from Magic's history (a card from "The List")
For example, Atraxa's ability to proliferate enables an infinite turn combo with Magistrate's Scepter and Contagion Engine
Oil-Slick versions would be my first stop
Overhand Shuffle The overhand shuffle is the basic technique for a standard deck of playing cards and probably the first way you learned to shuffle
Instead of spending time going through a box of Theros, I will skip it and move on to another set