It doesnt gain anything from its unique design
Long ago, the beholder heard rumors of an arcane device known as the Maze Engine, capable of shifting the gears of reality, and it has become obsessed with locating this mighty artifact
Lorwyn introduced the first five planeswalkers, then the next three sets ( Morningtide , Shadowmoor , and Eventide ) had zero planeswalkers in them
Six mana cards are generally not utility or answer cards which are the most useful to be able to tutor for, Treasure Mage will mostly go and find a win condition, which then begs the question as to why you are not just playing more win conditions or more effective draw spells
Seems great for the deck it goes in
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