>>/7757/
> [Vickers fairy]
Her movements when correcting for the motions of attacking spirits created a tree structure in 4D, made up from the line of fire of her gun. It looked almost like a tree made from frost on a window in the winter.

The other fairy posted in the hex thread:
 >>/7755/
> [FairyX2]
made a similar pattern, but the tree was made up of knives. It took longer for this fairy to become effective in full, but she does her job by now.