I think Pridemage should be 2 or 3 no more no less, 2 is a fine number.
Linvala main, I like it in the right meta, I use to maindeck one too.
A little bit funny, not more then I couple replays ago you didnt like stoneforge. ;-) I have mixed feelings but maybe just one is fine. And I dont say player that are playing a sword of something is wrong either. But starting playing Batterskull is just bad.
Before when I used to play a Linvala and a Stoneforge main I played a Fauna Shaman aswell. If you are going to main deck a Linvala I think is right to cut a planeswalker.
Why just 3 wastelands? I know they are not great in some match ups but sick good in others, would not play anything but a full playset.
Guess I would cut a PW for a Fauna Shaman atleist and get in that last Wasteland.
One more planeswalker, you seems to love them. :-)
Guess you made the right play but would love to get more info. Lifes? How many cards in his hand? What cards was on the board? How big was KotR? :-)