Infirmary

She places the scarab on a wide area. It would immediately "burrow" into him, headed straight for his heart or heartlike organ. It's less like real burrowing, and more like momentarily displacing flesh, leaving no hole or other sign of it's passage. Once at Issac's heart, it will try to suck the curse out, into itself. The scarab is very good at this, and is immune to the effects of most magic itself, and unless something goes weird the curse will be forced into an inert state.