Fey Mist

Source: Paizo Blog

This strange swirling mist of purple and green gas and motes of light dazzles those who stray within it.

Fey mist provides concealment. Furthermore, a living, non-fey creature that starts its turn within the mist must make a DC 12 Will saving throw or become confused for 1 round. Those that make their saving throws are dazzled for 1 round instead. This is an enchantment effect.

Some areas of fey mist are more powerful than others, and have and require a DC 15, DC 20, or even DC 25 Will saving throw to avoid its confusion.