Even as someone who isn't necessarily interested in competing in the game, simply owning them might be enough to entice collectors
This is a card good enough to pull you into white, honestly
That said, the possibility of opening one does increase the overall expected value by a few dollars
On top of that, its also very powerful, which is the ideal combination as far as Im concerned
Dark Depths (The Boy in the Iceberg) Legendary Snow Land The Boy in the Iceberg enters with ten ice counters on it
For example, if you control Johann, Apprentice Sorcerer ("Once each turn, you may cast an instant or sorcery spell from the top of your library") and Promise of Aclazotz is on top of your library, you can cast Foul Rebirth, but not Promise of Aclazotz