Warden

Intimidate (This creature cant be blocked except by artifact creatures and/or creatures that share a color
with it.)
When Warden enters the battlefield scry {x},
where {x} is the number of creatures in all
graveyards.
Whenever Warden kills a creature you don't
control, draw a card.
{2}{u}{b}, {t}: Deal five damage to target creature
you don't control and six damage to another
creature you control.