[[Hour of Devastation]] was the first set to not be added to the pool of cards of the previous, odd-numbered release. All of this may sound dire, but most of it either benefits the player or balances out. Commons tend to be less useful. Not having Masterpieces means that more powerful cards tend to be found at the Mythic or even Rare level, to which {{Card URL|Omniscience}} and {{Card URL|Whir of Invention}} attest. Players were concerned, when Hour of Devastation was announced, that its large card pool would make acquiring [[Amonkhet]] cards too difficult, but it was not made into an expansion. The small size of the three expansion sets, with their smaller card pool, less diluted their main sets.

== Booster packs by set ==