>>42285231 (OP) Since all you need to do to mess with a unicorn's ability to cast spells is hit their horn, it probably wouldn't even be very hard. You just need the element of surprise.
>>42285313 No, it makes me very hard. But I don't want her to get hurt too much. Also I wouldn't be able to rape her myself, she's a really cute mare and she has a big heart.