At all times, you need to keep track of important cards that you want and make use of abilities and instants to bring them back from or put them in the graveyard
Meanwhile, Mega Sharpedo ex can be boosted via multiple damage modifications including its own attacks effects, Binding Mochi, and even via Gravity Mountain and strategic damage movements with Munkidori to take massive knockouts with relative ease
That means its totally possible well get a One Piece Card Game Digital Version at some point
One of the cards in this deck with the highest ceiling and the ability to snowball a game is Uchuulon
I feel like even allowing for destruction is a bit generous, but between stripping indestructibility and mass exile, the distinction likely doesn't matter much
Heliod, the Radiant Dawn Heliod, the Radiant Dawn is kind of a silly March of the Machine commander