The first thing a design team will do when they want to add something is examine what has already been done
Others have to use tricks like casting Deep Analysis to force you to draw cards and would otherwise have no game at all
Torture Chamber, Thumbscrews, Wheel of Torture, The Rack, and those sorts of cards might make for an entertaining theme deck, but too few of them would have reliably contributed to what the deck wants to do
for example, your cool counterspell should be blue, your hasty creature is likely red, a card that cares about power is green, and so on
Contents: 16 Magic: The Gathering cards plus 1 Token or advertisement card 24 cards of rarity Rare or Mythic Rare 35 Uncommon cards 810 Common cards 2 Traditional foil cards of any rarity 1 Additional random card of any rarity (could be Rare, Mythic, or Foil)
If a card somehow has multiple alternative costs available, you pick one