This is total LoLz if the opponent puts out a sanctuary... (now if only there was a spell that could "Give" the opponent the sanctuary ...
)
The fractal combo is pretty potent... but I think it may be okay.
I can see several amusing uses in deception type decks. It would be fun to combo with a gp voodoo vortex-mare, or with a SaC-mare.
As strange as it sounds, I actually think it would be nice to drop its attack a little for both because that would allow shield-mare deception style decks to flourish.
For instance I could see it being used with titanium and diamond shields + nightmare.
It also makes an obvious choice for SoPa strategies.