An alternative nerf?
*blah blah blah*
I hadn't seen any good nerfs that would work, so I posted one somewhere a few pages ago that I really liked, and a few other people did too, but I think this one is at least as good if not better than the one I proposed. SoF would be pretty much just as powerful early game, but it would lose a lot of power in the late game since it would be delaying your whole field. In the early game, you might not have anything else out, and you can activate SoF and then play a creature to partially bypass the restriction, but in the late game, delaying 5-6 creatures is going to be quite costly most of the time.
Ironically, this nerf also has synergy with voodoo dolls, since delaying your own doll will delay your opponent's weapon :p