The Pet Rescue event After Update.

[Corviss the Lich]

But that's just the thing, I grinded for 4 hours with 70% luck and didnt get jack. Each run was like 45 seconds non stop litteratly the first day was good, and since then I havent got one heroic drop, nor arcanite.

That's tough, you're unlucky I looted 2 heroics recently for 1 or 2 hours without luck, idk but it is what it is. I doubt they'll revert it back from what it was.

And btw Arcanes and Heroics is not affected by luck%, so it is completely by your own luck.