I just started playing and the cost of Eye Beam is increased to 1 with an active outcast effect and the cost of Skull of Gul’dan and Imprisoned Antean is 6 despite both of them showing as 5 drops in my collection.
check the other posts, this issue has been answered many times.
I had kind of the same issue. Its not a big problem. Probably its a bug, but anyway. Today i was playing normal game with the new class demon hunter and at the start of the game I drew that one spell that cost usually 5 mana(draw 3 cards,outcast:reduce their cost by 3). So i drew it and until the end of the game it cost was changed to 6. After that i drew the lifesteal weapon which is usally with 2 attack and 3 durability. But on both of my weopns in the deck the durability was changed to 2.
its not a bug, the cards were nerfed because dh is way to strong compared to the other classes
Post explaining the nerf: