The ability to protect you the turn it comes down combined with its obscene amount of draw makes The One Ring absolutely absurd in constructed play
The set has 33 Green cards, 33 White cards, 27 Red cards, 27 Blue cards, 16 Black cards, and 4 multicolored cards, all of which are Green/White
The most obvious is that Fateful Absence can hit planeswalkers, which tend to be heavily featured in the classic Cubes as we call them
Assembly-Worker This is a version of a creature players had only imagined until Mishra's Factory was reprinted in Time Spiral Remastered for Urza's Factory
If you gain control of a creature "until end of turn," or if a noncreature permanent you control becomes a creature "until end of turn," it'll be a creature under your control through the entire end step