Hearthpwn

Don't think there is a reason to run the Stormwind Knight, It's a waste of space. The charge minion is important but the Witchwood Piper (good Idea BTW) drawing the ever important boar (which you are missing) Stormwind Knight serves little to no purpose. Cut it for a second Witchwood Piper. Cut the Lyra and the Divine Hymns, that's three extra cards cut at least one Eternal Servitude and that is four extra cards. Add two Boars and two Deadringers and you have a more consistent death. 

Explanation, Lyra does not serve a purpose to the win condition you only run buff cards for the combo, the reason this deck could work is that its faster than the other combos. So consistency is key. Deadringer is that. Any other questions just ask. (personal opinions)

Battletag: Flow#11943

Region: NA

Trade: Yes

This being 2 mana screws it up, if it was 1 than it would be pretty good but you would have to run the 1 mana 5 armor card. Not enough to get a lot of value later. It only has 2 durability and when you use it it gets worse. A truly wasted opportunity to save warrior.

This is Jace: the Mind Sculptor as a hero card, this Jace is iconic in magic as one of the most overpowered plainswalker cards in the game. I have recreated him as a hero card. The battlecry is his original magic ultimate ability. Jace's hero power is a simplified version of his original +0 ability. The specific discard mechanic allows you to pick a card by "playing" it.

And finally the original Jace for comparison.

The hearthstone card would be ruthlessly effective for a new control style mage deck and would dominate any control decks not fit to face him.