Klaus, Speaker of the Dead

When Klaus, Speaker of the dead enters the battlefield, create a 0/1 Legendary Ben spirit
token with {r}: Ben spirit tokens gain +1/+1 until
end of turn and can block any number of
creatures.
{b}{w}{r}{t}: Return a creature card from your graveyard to the battlefield. It gains haste until
end of turn and is a spirit in addition to it's other
types. Sacrifice it at end of turn