[ser] Put this card in play. Each time your prey gets the Edge anew, put a counter on this card. During your master phase, if the number of counters on this card equals or exceeds the amount of blood on a vampire controlled by your prey, you may burn this card to take control of that vampire. A Methuselah can have only one Form of Corruption in play. [SER] As above, and your prey burns 1 pool when you burn this card.