Lilith, Edgar's Heir

Flying, Vigilance
Whenever another creature enters the battlefield
under your control you may pay 3 life or discard a
card and put a +1/+1 counter on target creature. It
becomes a vampire in addition to its other types.
{1}{b/r}{b/r}{t}: Vampires you control gain Lifelink
and you may gain control of target vampire.
Partnered with Rez, Olivia's Heir