Hearthpwn

I wanted to just get a double check on this.  Just played a game where i had the 1/2 dagger out.  I used the hero power to buff and atk (so it goes to 2/1). My question is does it stay 2/1 or go to 1/1.  I was under the impression it stays 2/1 since the hero power doesnt state buffing the weapon only for that turn.  Would like some insight for a doublecheck on it please.  

If you have a 1/2 dagger, and then use your hero power, then you have 2/2, if you attack with it, it becomes a 2/1 and at the end of the turn it goes down to 1/1. If you use your hero power next turn you will have a 2/1 knife.

That is stupid then b/c the way its worded, sounds as though it would persist (example druid hero power gives 1 atk this turn and 1 armor). 

OK after doublechecking the fireside duels, and also going ot the hero power portion in here, it is just this turn.  (cockatrice port has incorrect wording for it. lol had my hopes up)   With that said Ya That buffs just a quickie dmg can't stack which makes blade furry only for deadly poison builds :(

http://www.hearthpwn.com/cards/201-dagger-mastery  I'm not sure if it's updated in cockatrice, you may want to clear your image catche

you cans till bladefurry. Just not as efficent. You can get a weapon build where you get a weapon hight with spiteful smith and deadly posion then attack the enemy hero once and use blade fury to clear the board and deal double weapon dmg to enemy hero