They evaluate cards based on condition, centering, corners, and surface quality
So long as you're mindful of your limitations on how many color pips you use in your spells, there's no shortage of ways to tweak this list, so do so in whatever way seems best for you
Though it might be too early to predict what decks are going to be at the top when old cards rotate out, we can safely assume some of the most powerful cards will remain as staples in the formats to come
Spellbook is like Reliquary Tower in that it costs literally no mana to play, plus it is fetchable like Library of Leng with Trinket Mage
ULTIMATE CARD PROTECTION: The matte finish not only provides a smooth shuffling experience, but also prevents glare & fingerprints, maintaining the clarity & quality of your cards for years to come