Bitter Ordeal Cranial Extraction Denying Wind Dichotomancy Dimir Machinations Extract Haunting Echoes Jester's Cap Kotose, the Silent Spider Lobotomy Lost Legacy Memoricide Neverending Torment Nightmare Incursion Pick the Brain Reap Intellect Sadistic Sacrament Stain the Mind Supreme Inquisitor Thought Hemorrhage Titania's Command
Getting to double the effects of expensive and X-cost spells for just a one-mana kicker is already some amazing fair value, especially when you can opportunistically copy Faithless Looting and other smaller spells in between the big stuff
What started out as a gimmick turned into something extremely real, and Combustible Gearhulk is one of the most impressive cards Ive seen out of the new set
TL;DR: You won't be required to collect as many reprints to fill out your collection
Sometimes it's small effects, like Eager First-Year getting +1/+0 until the end of the turn, to the absolutely ludicrous like Jadzi, Oracle of Arcavios letting you reveal the top card of your library and play it for just one mana
The packs themselves include 20 cards each with at least one rare, about 8 lands and a cohesive theme