Yeah Mana Drain is in the Jitte/Nightmare/Balance/Library realm of bustedness - and all of these are even better than the likes of Mind Twist if you aren't running fast mana. Basically, YMMV as far as your acceleration goes and whether you run those other nasty cards or not.
Drain is fine, it is what you want in a powerful environment(even if unpowered). Now if you intentionally want a less powerful enviornment, without a lot of the best cards like skulclamp, mindtwist, Liliana etc. that is your choice.
I think Mana Drain is a step above those when it's at its best, as it opens up games wide-open while still being at worst a counterspell. It's effortless ramp while all the other cards require some kind of set up. It allows the blue decks in an unpowered environment to be able to do stuff it really shouldn't there.
Also, goodking, are you talking about Library of Alexandria or Sylvan Library? Because Library of Alexandria is WAY better anything we're talking about here. I would never consider it for an unpowered cube in a million years, whereas everything else is at least reasonable as top-tier unpowered cards.
On spoiled card wishlisting and 'should-have-had'-isms:
Also, goodking, are you talking about Library of Alexandria or Sylvan Library? Because Library of Alexandria is WAY better anything we're talking about here. I would never consider it for an unpowered cube in a million years, whereas everything else is at least reasonable as top-tier unpowered cards.
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