This ranking focuses on tutors with a mono-blue color identity
Dark Magician Girl 1st edition Worth $13,200 The only version with the OG Anime art Not part of a competitive deck archetype Dark Magician Girl was first printed in 2003, in the North-America only set Magician's Force
(It's an artifact with " , , Discard a card, Sacrifice this token: Draw a card.") Whenever this creature attacks, it gets +1/+0 until end of turn for each Blood token defending player controls
Aside from being foil printings, all the most valuable cards are also borderless, with players seemingly having an affinity for the Legendary Creature/Commander cards that use plain backgrounds emblazoned with the Roman numeral for the Final Fantasy game they appear in
[Colorless][Colorless] Wing Attack 40
I think you'll find that the ways the preview articles analyze the new cards follows a lot of what you learned today