Is water common enough for you? Simple hydrogen and oxygen molecules spontaneously combine to form more complex water molecules - and the spark that touches it off is pretty much void of intelligence.
That is only because the formation of H2O from H2 and O2 is a highly exothermic reaction. Any decrease in entropy is vastly outweighed by the increase in exothermic enthalpy that results in a reduction of free energy. Any reaction that results in a reduction of free energy is by definition spontaneous.
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