https://boardgamegeek.com/boardgameexpansion/279178/fireball-island-curse-vul-kar-formosa-expansion
Formosa Expansion comprises 8 unique cards depicting six extinct Taiwanese animals. The animals are: Swinhoe's Pheasant, Asian Elephant, Clouded Leopard, Formosan Black Bear, Leopard Cat, and Capybara.
The Formosa Expansion cards are shuffled into the Souvenir deck. Each card has a different effect.