While Opposition Agent was clearly intended as a tool to fight against higher power decks, it also simultaneously feels like a Stax card (a strategy intended to deny your opponents resources, primarily through mana disruption), a counterspell, and a Word of Command all wrapped up in a 3 mana package, and its impact has reached far beyond the intended purpose
What's your favorite Lost Caverns of Ixalan special guest card?
Sealed Evil in a Can: The demons seem to be inhabiting the Zodiac Stones, but after Marach is resurrected by one, Ramza wonders if it's just a portal to either Heaven or Hell
This set also uses transforming double-faced cards to represent famous Final Fantasy bosses and their different phases
Birds of Paradise, Llanowar Elves If you want to play Magic, then you need to make the right mana so you can cast your spells
This "worlds collide" conflict is amusingly captured on this card