Haha, this takes on Eternity's naming.
I really like the throw mechanic, very original. Plus, it gives time a more permanent form of creature control.
Why does it return to the deck and not the hand (speaking that a boomerang returns to your hand)?
Unless, your a crappy boomerang thrower and get it stuck on the top of your deck.
Also, you should make it cheaper and weaker, say three quanta for 2~3 ATK cause eternity is double that. Then it can fit in the non-rare weapons.
Can you make like a golden arc trail in your art? So it looks more in motion then stasis?