Hermione crumpled to the floor, overcome by emotion, as soon as the horn materialised from the end of her wand. She was so overwhelmed by a wave of such sheer joy that her knees buckled beneath her. The silvery unicorn gambolled around her a while, before nuzzling gently at her bushy crown. She reached up to pet it a moment, before it dissipated away. She was sorely tempted to re-cast the spell.