How?

Paladin can take stats away with its spells.

Priests and demon hunters have the most options.

shaman can try to devolve it but it will still be a 8/9 cost minion at least. The damage spells aren’t good enough to run.

Warlocks MIGHT have the spells to do 8 damage to a minion that early but it won’t have the mana to do it right away. Unless they already have a massive go in board the minion should get at least one attack off.

Rogue would have to use 3 different damage spells to take it out. And has no significant early board to help with that.

I guess mage can freeze it for a while if it manages to draw/mulligan the right cards but killing it right away is impossible.

Hunter would have to sack minions and weapon attacks which it’s good at But you can just devolve their win cons anyway.

Druid has no solid answers to an big board early on besides throwing taunts at them and praying they make it to guff and earthen scales on big minions. Aggro Druid will never survive without giving up their win con of their early board.