Many are cards, but there are also a few cosmetics, like Field Parts that decorate your game screen, and a Mate mascot that cheers you in while duelling
Many Equipment provide stat boosts, such as Behemoth Sledge, Blackblade Reforged, and Hexplate Wallbreaker, making hitting the seven threshold easier Some Equipment puts +1/+1 counters on the equipped creature, such as Power Fist and Pip-Boy 300, which makes it easier for creatures to permanently have seven power, with or without Equipment
Every card is looking beautiful so far
Waiting a week risks the price softening as more cards hit the market from other sellers
All packs have one or two rares/mythics as well as a special "theme insert" that isn't really a card so much as it's a placeholder
Searching for a land upon entry is already something you're pretty happy with on most creatures, although it would be nice if it didn't just search for basic ForestForests