Umbilicus | Magic: The Gathering
Formats Umbilicus is Legal in
Official Oracle Text for Umbilicus
Official Rulings for Umbilicus
10/4/2004 : If you don't have a permanent to choose, you can still choose to not pay the life and then just do nothing since there is no permanent to choose.
10/4/2004 : You choose to pay the life or not pay the life during the resolution of the ability.