Mephitic Vapors seems more of the former
The set does have several well-known cards that youve undoubtedly seen played during a game of Commander like the filter land cycle and Devoted Druid, but there are also many cards from the set that are being overlooked
"Start your engines!" is a keyword ability first introduced in Aetherdrift, not to be confused with the card by the same name introduced in Kaladesh
5 Nightmare One of the original rare creatures from all the way back from the Alpha set, Nightmare is a powerhouse in a mono-black deck
Ok, so how do you selectively remove parts of a card
It scries towards action, passively saps opponents life totals, reanimates creatures while hating on graveyards, and comes right back to its owners hand if it dies