It can't possibly be as bad as pulling Descent Into Madness. What an awful card, and Mythic too.
Not NEARLY as bad as Archangel's Light.
http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=244691
A card whose design just has me scratching my head. You would expect an 8 mana card to RAPIDLY end the game, not stall it out. In comparison a 9 mana HARDCASTED Entreat will basically assure the end of the game in a couple of turns. An 8 mana topdecked one will force them to have response or to scoop. I suppose it's good in a world where aggro-mill exists (ie. Jace's Phantasm). So... it's a sideboard card? Like, I can't conceive a world where this is even remotely playable.
Descent would actually be a decent finisher in some sort of discard (unlikely) or token (much more likely) based play. I've play tested a custom set before with a one-sided version of that, and at 5 mana, if you could hold on for two turns or so, you won the game. Period. You cannot recover from eating that much material loss and for the symmetrical case, losing tokens and such is not a huge deal. Battle of Wits on the other hand is unconditionally unplayable in limited, unless the format is nothing but tutors.
And I dunno why Wizards reprinted Battle of Wits. It's just un-fun. And it requires ridiculous amounts of tech, too. Like, you need ridiculous numbers of tutors to get it work. I can't think of a new spin they could put on it like other cards. It mandates a library larger than 200, and it mandates that you have something else get it into play because 4/200 is pretty weak odds.
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