Nectar of the Green Man

When you drink this potion, you gain the effect of the Commune with Nature spell, but your experience is filled with terror and dread. You must make a DC 15 Wisdom saving throw. On a failure, for the next 8 hours, you have Disadvantage on attack rolls and ability checks while you can see a forest. You automatically succeed on the save if you have Immunity to the Frightened condition.

This bottle is carved from wood, with a green, leafy face adorning its surface. The liquid is a deep green streaked with shades of umber.