Yes but the earth is for early defence and the chimera is mainly for two shotting opponent while he is stuck at the huge creature and 60 is just fine for that.(this is not a rush, it is a fast deploy shield). It starts dealing slow damage and when i need to use my creatures for final defence while destroying opponent even behind a shield i put chimera(it gets huge, from there the deck name, but it is mostly a boost at the end, almost removable).
EDIT:Otys are CC, pulvy is PC, and the number of cards need to be low(to fastly deploy armagios/BB, then you resist with that until most dragons are on the field, then chimera for final defence while killing opponent)