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The Pokmon Company have revealed the first 9, which you can view below

Technical info, legality, reprints (plus secondary market value, although I understand why a Wizards official page would avoid showing that)

You may cast the creature later from exile.) Illustrated by Jason Rainville Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp

For example, Dig Through Time's mana value is 8 even if you exiled three cards to cast it

This is in part because the deck needs enough white to be able to cast Gideon of the Trials, in part that it needs enough untapped blue early to cast the eight early library manipulation, and in part that it needs not so many lands that enter the battlefield tapped that it gets tripped up in the late-game casting a Hive Mind