The ability to do this at instant speed is really powerful, and it being on a Land makes it easy to rely on in a pinch too
Similarly, it won't be subject to the turn-based action that adds a lore counter to each Saga you control at the beginning of your first main phase each turn
Ares, God of War 54%inclusion 935 decks 1.73K decks Bruce Banner 0.7%inclusion 37 decks 5.56K decks Loki, the Deceiver 1.6%inclusion 25 decks 1.55K decks Smaug the Magnificent 1.2%inclusion 21 decks 1.74K decks Nick Fury, Agent of S.H.I.E.L.D
I was lucky enough to play with both, and having seven mana sources, an equipped Cloud, and a buffed Sephiroth by turn four (yes, its possible) made me feel godlike
It takes spot 3 in my personal ranking
You may play lands and cast spells with mana value 4 or greater from the top of your library