Idea to balance this aggro meta

A neutral spell that's a solid board clear.

Something like:

3 mana, deal damage to all minions (damage dealt equals the amount of your opponents minions)

Board clear is lacking and a solid event card board clear that can slot into every deck would at least give some decks a chance against Shamans and Hunters and there turn 4/5 full board shenanigans.

I'm hoping Rogue gets scaled down with nerfs to Jade Guardians, imo troublemaker isn't too bad, it's the Jade Guardians dropping 0 mana 8 costs on turn 5/6 which is impossible to comeback from.

This current meta has me missing Control DK from last year, even Protoss Mage which I absolutely despised, just some variety and games with momentum swings.

Thoughts? What would you do to fix this meta?