Cards that create fast mana like Mana Vault and cards that deny opponents access to their hands while also drawing your entire deck, like Grand Arbiter Augustin IV, are prime examples of unfun cards to play against
I think this card would've been more aptly named "Tom & Jerry," but Hungry Lynx is still pretty good
Sorcery speed is a big hindrance with threats such as Heart of Kiran and Glorybringer, and with all of the Gods from Amonkhet block having some form of indestructibility, I dont expect Walk the Plank to be the most-played black removal spell of the set
Its not a definitive rating system, just something to give an idea of where the deck stands
And if Toph dies or re-enters, you get another, larger double striker to beat down with
It is vulnerable when first deployed but your whole deck fits that bill somewhat