I expect many Standard players who are dumping their RTR-block rares will hold onto their shocks after seeing what happened to the Zendikar fetchlands, so the market glut wont be as big as it would be otherwise
This does put him in the entertaining situation of going infinite with other versions of himself (notably not Niv-Mizzet, DracogeniusNiv-Mizzet, Dracogenius, for those keeping score at home), in perhaps one of the best mechanics-meet-flavor designs we've ever seen
It interacts nicely with some of your other cards such as a Reflection of Kiki-Jiki copying it in their draw step to lock them out of playing the game
As cards like Grim Monolith and Yawgmoth's Will get more expensive, these gold-bordered versions should follow suit
He is also one of the most common Pokmon from the Base Set
Making someone else realize their Worst Fears is even better when you double it up with something extra evil like Counterlash or Spelltwine