“ With a huge number of sacrificial victims, another realm long ago secretly bound a Prince of the land spirits, Iorstonn by name, thus ensuring the fertility, and improving the magical defences, of their realm. But binding that Prince to one spot has disrupted the weather and magical patterns (ley lines?) over half the continent. Things have become bad enough that a coalition has been formed to rectify the situation, once divinations have established the cause.
Your party is one of the teams assembled to do the rectification: find the binding object and steal it ('so that we can destroy it here in our realm, of course'...*) or destroy it over there. Presumably the Prince will be grateful to his rescuers and angry at the binders, but with a greater spirit like Iorstonn one can never be sure: such beings are 'tricksy'.
* Of course, the rulers of our realm might want to control Iorstonn for their own ends...”
“ It is rumoured that a sort of little people living deep in the green woods have magic acorns. If they throw and hit someone with by one of these acorns the victim will experience temporary madness for a small duration of time, making the babbling victim easy to capture of kill.”
“ People argue about the true form of the beasts known as 'Bloodtouches', since they seem to take dozens of forms. Unfortunately, their bite's effect isn't in doubt. Anyone bitten by the bright crimson beasts rapidly loses all hair; their skin color shifts to bloody red. Many people fear those under this curse; villages of blood-skinned outcasts huddle in the wilds.”