Dark Dream Kholat

Menace, Lifelink, Hexproof
Dark Dream Kholat's power and toughness are
equal to the number of creatures in your
graveyard.
If Dark Dream Kholat attacks alone, it cannot be blocked.
{4} Search your library for a creature and put it in your graveyard. Shuffle your library.
"He was a creature who spoke with power and fear,
but never to anyone at all." - Ella Nachte