Keyword Reminder Part 2

Offering(When casting this card you may sacrifice
creatures you control of the same type. This card costs {x}
less equal to the combined mana values of the creatures
sacrificed.)

Divine Offering(If you sacrifice three or more creatures for
this creatures Offering, they may be of any type.)

Morph(You may cast this face down as a 0/2 creature for
{1}. Turn it face up any time for its morph cost.)