Be2
Bulldog chess with Witch (game)

Just discovered a small mistake in your OP:
"The witch herself is not transparent to any piece." Yes she is! I considered Qa5 from the previous position.

Oh, OK. I update the witch's description. I like these game rules - they are very interesting. Regardless of this game's result - I hope to play it again!
Now I'll play:
13...i6
I can't tell if you're being sloppy or if you have a long-term trick planned. (like you had in our last game). Well:
10.Bxc4+