80 packs should definitely give you all of the normal and rare cards from the expansion, including the death knight ones. I got them all from 60 packs. Aren't you talking about the Path of Arthas cards? They are in a separate bundle you have to buy for 2000 gold, like a mini set.
Is it normal? I opened 80 packs of the new expansion yesterday, but I couldn't find any rare, normal, or epic death knight packs
80 packs should definitely give you all of the normal and rare cards from the expansion, including the death knight ones. I got them all from 60 packs. Aren't you talking about the Path of Arthas cards? They are in a separate bundle you have to buy for 2000 gold, like a mini set.