cards, the value of Giant Soldier of Stone depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Starter Deck: Yugi Evolution)
With the return of dungeons in the Take the Initiative mechanics and a new cycle of metallic dragon cards, Wizards of the Coast has taken its crossover quite literally
Chancellor of the Annex is profoundly annoying, and cheating her onto the board with some of White's recursion makes for a solid body as well
Dark Duel Stories has passwords that unlock Stage 5 characters, a password that makes Grandpa give the player an extra card after every Duel, and a password to immediately view the credits
Suffice it to say, if you want an Elesh Norn, Mother of Machines, there's a variant art out there for you