Lol anyone who says anything bad about this gets down rated even though the math shows magic crit it is kinda lame. Sure its nice for epeen but over time and such the dmg is only comparable to 1int and no macc. Just cause you already have magic crit doesn't make this better. I mean even if you managed 100magic crit that'd just be 10MAB. Which you think you can get a higher amount of easier?
10 MAB 5% of the time = 0.5 MAB over time, or slightly more damage than you'd get with INT+1. On the other hand, this is clearly way more awesome (notrly) because you get ZOMGEPEENBURST2 this way.