Hesitation
"This isn't half bad, but do you think that it will be enough?" Larisa asked. "It will, in the end, it is the best option to make the enemies unaware that I am here. They will think that somewhere else summoned that. Esmeralda's brother doesn't know much about the dragons magic that much and the dragons might think that this is something that is being controlled by Isa."
It was also another sure fire way that the shield won't get covered in dragons blood and will obtain more power to perhaps cause Rain's some problems. The real issue is how Rain could truly capitalize using that thing to improve his skills… at that rate, it will only level up a skill that he didn't have yet.
Rain tried to make some adjustments, but he was unable to make the crystal soldier level up things like his Earth or or ice related skills… the reason was probably the fact that he created crystal directly.