For raw ungraded cards: the standard protection stack is an inner sleeve, a rigid top loader, and then storage in a case
My sideboard was as follows: 4 Rest in Peace 1 Blood Baron of Vizkopa 1 Kaya, Orzhov Usurper 1 Despark 1 Rakdoss Return 2 Infernal Reckoning 2 Thoughtseize 1 Thought Distortion 1 Golgari Charm 1 Slaughter Games This sideboard targets graveyard decks like Soulflayer, Dredge-less Dredge, and Underworld Breach, along with Mono-Black Aggro, Izzet Ensoul, and Azorius Control
Cacophony was a short-lived god of dreams of the city from Ashioks manipulations, killed by Ephara
The only think i am trying to say if the Yugioh online official of konami was good in some things copy it and in others try to improve or make votes in discord chanell with the community for get some ideas
Lets get into the four decks, the cards they have, and which ones are most likely to gain some value