A proxy card is a replica of the original card, but with distinct differences so that anyone would be able to tell the difference between the original and a proxy
You may play it without paying its mana cost for as long as it remains exiled
(It's an artifact with ", , Discard a card, Sacrifice this token: Draw a card.") Whenever you sacrifice an artifact, put a +1/+1 counter on this creature and you gain 1 life
Compared to cards like Blue Suns Zenith or Stroke of Genius, this is a good alternative in the Commander format
Can pivot between offense and defense by searching for the right Aura for the moment
The idea of protecting something originally meant to be used and enjoyed (be it reading a comic book or, here, playing a game with a trading card) can lead to different opinions when it comes to fan reactions to the concept of grading