Clint reached into his quiver to grab an arrow.  A snake jumped out and bit him.  He remained conscious, yet his body was completely paralyzed by the bite.
The gypsy witch whispered in his ear:  "A mans kiss, by the stroke of midnight, shall seal your fate."
She then chanted something in a forgotten language and danced to the beat of tribal drums, played by her lackeys.
The changes were strangely aggressive.  They pulsed through his body in tandem with the drum beats.