During your untap phase, move 1 blood from your pool to Jack. Each other Methuselah during his or her untap phase burns 1 pool or burns 1 blood from a vampire he or she controls for each blood on Jack. Any vampire may burn this card as a (D) action.
Clarifications and Rulings
Each other player must burn a pool or a vampire blood for each counter on Jack. Failing to burn a blood from an empty vampire will not lessen the obligation. [LSJ 19971212]