Demonic Patron

Goat Offering (You may cast this card any time
you could cast an instant by sacrificing a Goat
permanent. If you do, the total cost to cast this card is reduced by the sacrificed permanent's mana cost.)
If a permanent was offered to Demonic Patron,
it gains the sacrificed permanent's rules text
except all instances of that permanent's name are replaced with "Demonic Patron".