No 'can make someone die' powers. Or really just no TOTALLY GODMODDING powers allowed. Although things like 'mind control', or 'erase memories' can be allowed as long as it's not overly powerful. For example if you do erase memories, you are only allowed to to make them forget what they did yesterday, or something they did at that time. Not erase who they were.
Reservations for powers are for a whole week. Only two people can have the same powers guys. ;>
You are allowed TWO powers. However if you just want one that's fine. If you want two it just has to be one powerful one and one supporting.