There are three drops to look out for, each in Foil and Non-Foil versions
Most artifacts are colorless and can be cast with any type of mana, but some require mana of a specific color
So yeah, The First Doctor is going to be a cascade deck, and if you like Planechase cards, you can planeswalk too
Draft appeal is strong if you've got a dedicated playgroup who enjoys high-power Limited environments, but if you're collecting or building a deck, verify the specific card you need before buying boosters
As previously mentioned, the Enchanted Rare cards are only found at the rate of 1 in every 3 booster boxes, or thereabouts, so pulling one is an especially lucky find
One thing worth noting as well is that there is no tutorial for drafting, so the first few times you do this its likely going to feel very alien to you and drafting is a skill that takes time to develop