Theres a reason for the change, and its due to the double rare or mythic rare in each booster
Iroas, God of Victory The amazing thing about Iroas is that this God has two abilities which, unlike the other gods, are both highly useful for the same thing: Bringing the heat
A rare nobody plays can be bulk, while a common that sees play in Commander, Pauper, Legacy, or Modern can be worth more than a handful of rares
Category #2: Dealing Direct Damage I like to describe the cards in this category as "Fling" and "Fling Adjacent" because they allow our pumped commander to deal direct damage
When you do, target creature with haste cant be blocked this turn except by creatures with haste
The same set introduced tiered rarity for Sol Ring, the games most popular card