Losing a creature a turn is a hard pill for an opponent to swallow, especially once it costs you no investment past the initial one mana and one card
presumably those crushed metal debris are the remains of the many scissors lizards that the Rock Lobster has murdered
Once the spell resolves, you can put your hand onto the battlefield for free, and with powerful enough of fatties, that should hopefully be enough to decide the game
Its basically free, draws a couple cards, and can still be played for its full cost in the worst-case scenario
Fact or Fiction is a decidedly Sphinx aligned spell, with variations of it appearing on many Sphinx over the years, not least Unesh
That happens to be almost exactly opposite of reality