Eric - you should run this broken card instead of either DSC, Sphinx of the Steel Dan, or Inkwell tomorrow:
http://sales.starcitygames.com/carddisplay.php?product=12984 
But seriously, the pluses and minuses of each meta tinker target have been detailed not only in this thread but in any thread like it, and for me it seems that neither DSC, Inkwell, or Sphinx of the Steel Dan is strictly dominant. Each is highly situational and each obviously work well with counter back-up. If I were to play Tezz I would probably go inkwell just due to the ease of mind of having less bounce/kill spells to fear. The spirit link on the Sphinx is pretty brutes though.