Fester, Sin of Gluttony

Changeling (This creature is every creature type.)
{b/g}{b/g}, Sacrifice another permanent: Fester, Sin
of Gluttony gets +1/+1 equal to the sacrificed
permanent's power if it was a creature and gains
all its activated abilities until end of turn. Return
the sacrificed permanent from your graveyard to
your hand at the beginning of the next end step.
"This orc tastes... Powerful. I... Am satisfied."