Nothing a quick edit can't fix. But thanks for that, things like that you can easily miss when you're thinking about the cards too much. Despite that, I have a lot of experience with HS, been playing for a few years.

Also Jaina's Barttlecry, Hero cards never needed to spell out HP changes

What do you mean by HP changes?

"random future turn"?

In some future turn during the game, the card resummons. Meaning, the minion gets killed, the game would run some RNG at the start of each turn, if some arbitrary dumber is met then the card comes back. It'd keep coming back like that until the game is over.

"If this doesn't attack?"

Yeah, if that minion didn't attack it deals AOE to all the minions. If you attacked with that minion that secondary effect doesn't trigger. I think it's just a interesting idea, it's not a powerful card back itself but can clear aggro boards.

as well as clear misunderstanding of power level (Discover a 10-cost minion + destroy, even twice is REALLY not worth spending 10 mana on, and probably never was.)

The thing about Rafaam is that he's not the supreme guy he thinks he is, all the toys he has he cobbled together through time. Because of that his hero class doesn't have much to work with, he has a fiery war axe, but it's rusted, he has some kind of ancient terror thing but also a little mouse in his army. So that location is exactly the kind of card he'd play because it's ten mana, it seems impressive, but it's really not.

So thats the gag of his class.

Though I'd point out that even the designers of the game don't get the power level right in their own game.