Even just having one Censor in your deck, and cycling it away on turn 1, sends a signal to your opponent to be cognizant of the card and to play around it for the rest of the game
Today, I focus on cards that help a typal deck in a generic way, like Cavern of Souls and Coat of Arms, and not on a specific creature type like elves or goblins
I like using By Force to remove early mana rocks
Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When this creature is turned face up, destroy target artifact or enchantment an opponent controls
Llanowar Elves Showcase (Fracture Foil) The OG Mana Dork, Llanowar Elves was part of the very first MTG print all the way back in 1993
Should the set be particularly popular, and some of the rarest cards be worth an astonishing amount on the secondary market, this value will only hold and grow over time