Serina looked a bit worried by the needle as she was held in place.  She shook her head timidly, wincing quite a lot as she was approached with the needle and had it pierced into her vein.  Something about it was making her feel uneasy...as if she were being confined when the blood was drawn from her.  She started to panic and pushed Saber off her with her free arm, changing it into a large metallic structure that now stood between herself and saber with the syringe of blood.  She was breathing quite rapidly now and in too much of a panic to question what just happened with her arm...it wasn't even organic anymore and when she calmed down she would be wondering even more so what was happening to her.  Sure, she wanted a wall to separate her from the syringe, but she didn't realise the wall would've come from her own arm.<br/><br/>((When you have the syringe with her blood in it, you can make her change shape as you wish.  I'm thinking that the blood has to be within a certain range of her to have an effect on her (like 100 meters on average maybe, but with slight differences depending on the will of the individual).  Also if anyone else gets their hands on some of her bodily fluids then the one with the strongest will to change her form at that time will succeed.))