Expedition was one of the last sets printed by Wizards of the Coast, and although the print run of Expedition was more extensive than the final WOTC set Skyridge, the market certainly wasn't flooded with copies when it released in 2002
Great Dezard is just some random spellcaster dude with a very fancy, bizarre-looking headress
Arceus XY Black Star Promos #XY197 Number Supertype Subtypes Rarity Artist HP Regulation Mark Retreat Cost Weaknesses Type Switch Choose Grass, Fire, Water, Lightning, Psychic, Fighting, Darkness, Metal, Fairy, or Dragon type
Tinkaton Ability - Gather Materials You must discard a card from your hand in order to use this Ability
Legal Ramifications - The rights and obligations of the parties with respect to these Conditions of Sale, the conduct of the auction, and any matters connected with any of the foregoing shall be governed and interpreted by the laws of the jurisdiction in Illinois
The most recent Secret Lair drop featured foil constellation versions of the original Theros Gods, and there was a bit of a debate about whether the cards should be compared to their original foil value (which is quite high) or non-foil value
