Hearthpwn

Tech Choices:

-1 Arcanite Reaper, -1 Southsea Captain => +2 Mortal Strike or +2 Bash

Basically trading a bit of consistency with Ship's Cannon in exchange for better burst damage from hand. Mortal Strike gives you more damage at a higher cost while Bash is cheaper and gives you an edge against other aggro decks and the mirror due to the bonus armor gain.

-1 Fiery War Axe => +1 Spellbreaker

With the increasing popularity of Taunt effects (particularly Spikeridged Steed), there are a lot of situations where your opponent is at 6 or less Health yet they still lock you out of the game.

-1 Arcanite Reaper => +1 Captain Greenskin

This is one of the less common changes, but is one that to me seems like a great idea. It's an additional body to contest the board, and +1/+1 on a weapon is frankly a broken effect, so the more of them you can have the better. It's a pretty terrible topdeck though since without a weapon it represents no damage.