Wilds

Wilds (Wild) is one of four types of tokens first introduced in the Branch and Claw expansion, alongside Beasts, Disease, and Strife.
Wilds tokens represent lands that are perilous to explore - plants which look edible but are actually toxic, difficulty finding fresh water, especially dangerous paths, etc. However, once a given danger is discovered and noted (there are always a few survivors), it is easily avoided by future Explorers.
Rule
When Invaders would Explore into a land with Wild, instead remove one Wild from that land.
* There is no limit to how many Wild tokens can be in a land.