Netron, Ruler of Ruins

Indestructible, fear, trample
Eminence -- Whenever a zombie, nightmare or skeleton you control deals combat damage
to a player. As long as Netron is in the command
zone or on the battlefield. That player mills that
many cards
Whenever Netron does combat damage, pick two creatures in graveyards. Then return those cards
to the battlefield under your control.
They are black zombie nightmares in addition to
their other types