One of the best options is Acolyte of Bahamut, which lets you discount Dragon spells since Dragons have a lot of attack triggers and Karlach provides extra combat steps
Teferi, Time Raveler is the same way, as his passive power prevents players from casting instant-speed spells the moment he touches the table, preventing counterplay at a very early turn: as early as turn two if you can get some quick one-cost mana ramp out turn one
The set also adds depth to the collection, offering a variety of cards that are interesting for both collectors and players
The good news is that the rest of the Mythics from Magic 2010 clearly fit the definition, and there are at least arguments for the rest being classified as Mythics
Previously, Legendary Foil cards were seen as the rarest but now we know that the Enchanted Foil cards will now be the cards everyone will want to pull
Gods usually enter the battlefield as creatures, with a few exceptions