User blog comment:AYET/Talk about chapter 740/@comment-1595565-20140305164950/@comment-1595565-20140305171116

I was wondering that too. I certainly don't see why they couldn't. There would be some limitations as to how they use it due to the contract. That being said, Robin has become a possible wild card, because we don't know if Sugar made a contract with her in the midst of the chaos. Though we did learn more about what can affect her body by means of going through her powers.