Hearthpwn

Love mtg.. Only thing I would love to see in hs is mtg art... Omg those creepy artworks were just the best. 

This game needs more debuff spells like this.

Why should i put this in my Shadow Priest?

Deleting a big taunt for one

And if you’re also playing against an aggro deck you can out aggro them by nerfing their biggest minion

Card is kind of unclear, if it makes a minion's attack go down to 0 (5->0) will the minion be destroyed, or if its used on a minion that already has 0 attack will it only be destroyed.

If the minion has 5 attack or less when you cast this on it, it dies.

That -5/-5 has MTG vibes 

Meh.  Not putting this in my deck.

This is a discover card and exists since the shadow discover pool is very small and would lead to a massive chance of priest always discovering drown off the infinite value legendary card.

Not sure why people are comparing this with Shadow Word: Death. This can kill things with 4 attack, which is normally priest's blind spot removal-wise. But yeah, it faces competition with Drown, Cannibalize, The Light it Burns, Fight Over Me, etc. Where is the aoe removal to replace Lightmaw Netherdrake and Undying Disciple?

4 attack minions have not been a problem for priest in many years.

Well, I guess I am old :P

Aggro shadow priest would not play any of the cards you listed. They may play this but prob not 

So it can kill any 5 attack minion and a minion with 5 hp? If so its pretty good for a 3 mana removal, a better swd  probably

playable cards, but not worthy taking a deck slot..

these Shadow spells are more value type of cards to be discovered by Sister Svalna. 

Not sure you would run this with 1 mana removal in the game, or 4 mana with healing. But this can be discovered from Svalna.

A more flexible shadow word death/pain that can also sometimes be worse. That makes it actually seem sort of balanced, which means it probably won't see play in this day and age. 

3 mana is too much for a card that might not even destroy a minion.

Rather strange looking Shadow Word Death there. 
I think it is on the weak side there. Priest aren’t really lacking in terms of single target removal.

I can’t really think of any use for this other than getting over Paladin’s new divine shield cards as they have 3-4 attack.

Yeah, I'm also unconvinced. But in its favour one must point out that has no requirements to be played, so you can either soften a big chunky or get rid of a pesky poison minion.