mimikyu holographic card Pokemon TCG - Trick or Trade (Stamped) 097/193 The item available is listed in the Title Holographic custom card Mimikyu

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The thing holding it back is simply that it is pretty fair compared to the other stuff the deck can play, especially at the 3 mana slot

The main advantage it has over Magicians in World's format is the lower reliance on Electrumite

Youre much better off protecting yourself with a pillow fort card, like Ghostly Prison, and letting Smashy Gruul Man work for you instead of muzzling him and getting bitten three turns later when this useless Aura is inevitably removed instead of the combo players Rhystic Study

8 Hardened Scales Hardened Scales is incredibly powerful for its mana cost

As Dommermuth stated, early designers were twisting high concepts through an unratified game system made of still images and words