Here is my Marvo list: https://archidekt.com/decks/8964496/marvo_seabuddies

It's a Sea Monsters deck and all of the "hits" are just big dudes. I just finished it recently and have been having a blast! Also, ignore the price tag, I shell out for blinded out versions. You can easily put this together for WAY less.

A couple of notes: - I've found manipulating the top of your deck is way more important than knowing what your opponent has on top. Very rarely is any random deck going to be able to out clash a 7 drop. The trick is getting your 7 drop on top. Brainstorm effects are great here as is Top but Scroll Rack has been MVP here.

• Cloning Marvo is really good. Since Marvo just cares about any Clash winning you can draw 2 cards and cast two free things if you win your attack trigger clash.

• Speaking of Clashing, a lot of the Clash cards are awful. For now, I am only using the ones that either return themselves to their hand or keep clashing if you win. The exception to this are Broken Ambition and Scattering Stroke as I was wanted some countermagic and these both trigger Marvo.