Having cards like this gives you more flexibility when you are limited on the amount of cards you can run (100 or 101 in the case of my MTG Aristocrats Companion Deck)
That said, The One Ring is held back by a few factors, like its relatively high mana cost, so it's not always a straightforward addition to fast-paced Standard, Modern or Legacy decks where every bit of mana counts
Daybound/nightbound controls which face of a card is active, but it also controls which face is active when those cards enter the battlefield
Share, react, and relive moments together
With its striking design, unique abilities, and rich backstory, Cresselias legendary card is highly sought by collectors and players alike