Forum:Help me with my Earthbount Immortal deck please? :(

So I just came back from a 2 year break of Yu-Gi-Oh (quit after I formed a Crystal Beast deck w/o a Rainbow Dragon : and one of the 1st new cards I discovered were the Earthbound Immortals; more importantly, Earthbound Immortal Chacu Challhua. I have already made a blueprint for the deck, but then I realized one problem; How do I summon it? Is it 2, 3, 4 tributes? I'm at a huge loss :( Any help would be GREATLY appreciated!!!