Force of Despair showing Squidward looking sadly out the window may work with the card's name, but has little to do with its mechanic of destroying creatures (unless I missed a particularly violent SpongeBob episode)
Outside of perhaps the alternate commander Sophia, Dogged Detective, you can play with Deep Clue Sea as-is and be able to hold your own against many other decks
Note that you have to play the land
The real appeal, though, is being able to spend eight mana to potentially end the game as long as you deal damage with the Vorpal Sword to a player
I would look to run a mix of hand disruption and countermagic if I had the luxury of black and blue
As such, it could flip into literal Oko, Thief of Crowns, and I don't think it would be good (and it definitely doesn't flip into Oko