The First Chapter has 204 numbered cards, with the Enchanted cards numbered above that
While eight mana is a lot, you can cut it down to just two blue mana with the delve ability, making it much more manageable, especially earlier in a game
But if you are behind a wall of creatures and not threatened, which is common in the later game, then you can rotate his +1 and -1 and over a few turns draws cards, gain life, and influence future combats in your favor
Only time will tell, but I struggle to believe this is anything less than one of the strongest Izzet commanders ever printed
Combined with a card such as "Merlin's Carpetbag" which can allow you to return an item from your discard, this can be a repeated process
If you happened to catch coverage of any of the special preview draft events held by Games Laboratory and other local game stores, then you already know the majority of the cards that were spoiled in today's full listing