There are four basic levels of rarity: Common, Uncommon, Rare, and Promo
Cards that were once incredible in Modern are now barely played in Standard, and this set could either further that creep or just be another example of its effect
As such, they're often played as a one or two-of (more often one-of) as a card to fetch for at an end step to have some control over what you're drawing the next turn
Note, however, that youll get only 2 Rare cards at most (with 1 or 2 Rares per pack), along with 3-5 Uncommon cards, 8-9 Common cards and 1 Land
Swapped out Morphon for Rukarumel, Biologist and a basic land for The World Tree
I hope that this Midnight Hunt Guide to the Day/Night Cycle will provide enough information that you can start taking advantage of the moon cycle and flipping cards at a rapid pace