Form of Corruption - Action

[ser] Put this card in play. If your prey gains the Edge anew, you can add 1 counter to this card. If the number of counters on this card equals or exceeds the amount of blood on a vampire controlled by your prey during your master phase, you can burn this card to steal that vampire. A Methuselah can have only one Form of Corruption.
[SER] As above, and your prey burns 1 pool after you burn this card.