Brazil Unidentified Takeover

Brazil has been corrupted by an unknown deity. The Amazon rainforest grows uncontrollably, and the country's animals become unusually ferocious. You head there to investigate because you're a great wizard, but the corruption weakens you  To make up for your deteriorated power, you must counter the monsters' elements with opposing elements.

Counter fire with water, metal with fire, sun with moon, moon, with sun, and so forth.