One with the Multiverse

Enchantment{6}{U}{U}

You may look at the top card of your library any time. You may play lands and cast spells from the top of your library. Once during each of your turns, you may cast a spell from your hand or the top of your library without paying its mana cost.

Colour identity Blue

In short

One with the Multiverse has 5 listed printings; the most valuable is the Extended Art printing from BRO at US$5.80 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.

Every One with the Multiverse printing

Extended Art