Isobel was freezing. She had just come in from outside, yes she had been hugging Slytherins. It was the middle of Febrary- almost Valentines day, she noted- and it was freezing. Oh, and did she mention it was freezing outside. Yeah. She had Roza in her hand and she was trying to use the body heat in her hands to warm her up. It was not working very well of very fast. Isobel was getting a little worried, because it felt like Roza was quivering. Maybe she was shivering from the cold like a person. Well, she needed to be warm. Isobel did not have her notebook with her, but she was pretty sure she remembered the spell.

With one hand she kept a hold of Roza, with the other one she drew her wand. "Argentum...um...Callisomething," she mumbled. What was it? Isobel thought really hard, picturing her notebook page. Callidus? Maybe. She thought so, but she wasn't completely positive. Well, it was the best she could do at the time. Isobel concentrated hard and said "Argentum Callidus," wth a swish motion, then she tapped Roza. Instantly, the egg warmed to her touch, and Isobel smiled. She had done it, woohoo.