It could be a nice adition for the game, I was always wonderin how HS would implement effect such as Devotion Aura, the battle stances of warrior or the pressences of Death Knight (I'm still hoping to see this class in the game, it's my favoriter class in WoW).
If this happened permanently in a future expansion, that would be so awesome.
There could be weapons with 0 attack but with other effects...
The Mistcaller ;)
Oh god please don't that will probably break a little the game, just think in a deck full of auras so everything you do get buff, and don't tell me what it will not break it D:<
Auras on cards are already a thing , , . Permanent changes to your hero power can also be achieved through cards like or .Adventure bosses have had passive ongoing effects ever since Naxx (e.g. ).The latest brawl is, effectively, just a card which alters your hero power to include a passive effect except that you both get it at the start of the game so it's allowed to be OP because both sides get a boost.If you were going to allow a passive effect to be acquired from a card you can draw at any point, then you need to either ensure that it's use is mana costed or restrained (as is already the case with Justicar) or of limited duration (like, perhaps, on a weapon with a certain number of uses or turns before it runs out).
From a UI perspective, I could see Auras sharing a space with secrets. Instead of the colored question mark, they'd have a miniature version of the card art and a number on them. That way they would still look different than secrets, and you could mouse over/tap on them to see their effects and duration.