Corvo Cornelius, Dreadboon

Whenever another nontoken creature you
control dies create a 1/1 Spirit token(this
creature cannot block be blocked.)
Sacrifice a Token: Add one mana of any color.
If you add red deal 1 damage to each opponent.
If you add green out a +1/+1 counter in Corvo.
If you add black each player mills a card.
Sacrifice five tokens: Put target creature card
form a graveyard onto the battlefield under
your control.