Please do not send your turtle after another turtle. It is cruel and unnecessary, and even if it does win, it will be injured. We do not know if prayer works or not, we do not know anything. All beliefs may be wrong or true. And, even if your prayers did work, it is still not a good thing as it would only aid in allowing you to do a horrible thing- which, all things considered, unless the god we have is cruel, I doubt he'd help your turtle kill another turtle.