Zombie Horde is one of the best structure decks ever released for returning players to attempt their locals again (me included)
Though it isnt much use at all in the modern game, given its stats, its clearly a highly unusual Charizard, which is likely why its so valuable now
And the best thing about this card is that when its destroyed in battle, you can add a Shaddoll spell/trap from your graveyard to your hand, allowing you to fusion summon Winda all over again
Sacrificing Treasure from Pitiless Plunderer, getting additional card draw from Obsessive Pursuit, and The Ozolith for insurance are all great cards to use here
Deep Analysis Deep Analysis always gets cut from my normal decks, although that flashback looks tempting
Every box opened or shipped reduces sealed supply permanently