[Valerius]

As regards wendigo, the key thing is nerfing the magic, which you did. My gut instinct is that they are worth 35 gems (another nice thing about this price point is it helps promote the kokythiad - 30 gems for a stealthy mage or 35 gems for an SC). But that would be largest price increase on your list so it may be better to go with the 30 gem cost you chose.

As regards zmey, I also like the idea of making some kind of change to the unit but you don't want to make too many changes at once so for YARG 4 I can see going with the price/casting requirement increase and see how that goes.

Maybe next game I start I'll try Calahan's reduced misc slot idea and see how that works.