The Night's King

Deathtouch, Vigilance
When The Night's King enters the battlefield,
create X 1/1 wight tokens, where X is the
number of creature cards in all graveyards
{u/b}, Sacrifice a creature: Put a 1/1 wight token
on the battlefield
Whenever another creature dies, put a 1/1 wight
token on the battlefield
Winter is Coming