At the very least, the designers are at the top of their game here, with a slick, candy-colored art style for all the newcomers from Wreck-It Ralph
It scries when it enters, which helps to smooth out your draws, but the real reward comes when you play other artifacts, especially ones with mana value 3 or more
Getting two cards in exchange for one mana and a single weak creature is an incredible trade-off, which is why it had to be curbed
If opponents dont have a plan to counter Omniscience right away, this is very often a game-ending move, thanks to the abundance of incredible draw cards blue decks have access to
You can also make your Celestial Colonnade or something a dork and swing later after this has triggered
The second thing that happens is that The Ring gains its next ability