Ok, against workshops it is a control magic for 3 mana.  As a workshop player, I don't care.  I'm actually more worried about ral zarek than I am about this card because Ral can win the game and kill my golem.  You gaining control of my golem doesn't win anything really.  The loss of my creature is negated by the fact that you are still paying extra mana for your spells. 

It is good, flexible, reasonably cost but it is not abusively good.  It is not better than jace, though it might be better than jace in match ups that involve tinker and blightsteel.  I think you blue players are really getting ahead of yourself with how good Dack is, especially vs workshop.  I think this card is great in the blue mirror match and ok vs everything else.  It's actually awful vs. dredge unless they somehow leave 1 or less cards in their library.  

now the shops decks that run kulthoda forgemaster (I don't run this trash) might actually be worried about this card.  The format goes back to the good version of MUD, with slash panthers and rishidan ports.  

yes it works amazingly well with mystic remora.  I think this card can help introduce a new archetype into vintage. 

isn't death wish much better than cunning wish because it gets around random jester's caps and earwig squads