Fact or Fiction is very strong. It dominated during its time in Standard (or Type 2), while still being a favorite in Commander, Conspiracy, Vintage Masters and Eternal Masters. It made its way into FTV20 as well, which was a collection of 20 cards that had dominated tournaments during each of the first 20 years of Magic’s history and its in pretty good company. Its very popular, but hasn’t been reprinted in Modern, but it has a few cousins.
There’s only 20 blue creatures in the cube, which sounds roughly right. Blue is supposed to be a spell color (in fact, the most spell intensive), so this is good. The curve is little lacking, but blue isn’t the kind of color that really needs one. I’ll try to fix it, though. The color also needs one or two cards in the latter part of the curve.
Otherwise, counters, card draw and maybe a trick or two.