"The conditions." She went on. Oh, this mare is so in love with her own voice. There's true love right there. "Firstly, thou shalt do no pony, dragon, mule, cow, rabbit, Pinkie Pie or any other sentient being harm. Secondly, thou shalt carry out this challenge without  thine magic. Thy magic shall be sealed. Thirdly, thy form shall be permanently locked in that of a pony. And fourth, thou shalt not leave Ponyville, at least not without an escort assigned by Ourselves. Failure to comply with any of these shall be met with swift and final judgement."