[Kyrillos]

^No, that's not the reason. It was bugged. When this was being discussed somewhere in the official forums, SKiNG said something like

"Thanks for bringing this to our notice. We'll look into it and try to correct it as soon as possible."

I can't find the link sorry .

Sorry for possible necropost but:

I'd also read that after that announcement, that the amount increased was a mistake, but there was a "by-design" intention to increase mage stones by a smaller amount than the other classes to "even the classes" out. [...]

As if giving Fighter's bigger aggro and Archer's AoE faster CD by several seconds wasn't enough already.

DECREASE FN CD

[/shamless wishing]