I don't think there's a good solution. The horses are Farmers specific, so to exclude everything else is problematical.
The OP's group could forget about heating and include the special actions or -- I just thought of this -- use the Special Action card that has the horse on it as a regular action, at the cost of one food, which would block the space for that turn, like all of the other action spaces.
Horses are pretty powerful, so I wouldn't just stick it out there as an action to receive one free horse.
Brian
The OP's group could forget about heating and include the special actions or -- I just thought of this -- use the Special Action card that has the horse on it as a regular action, at the cost of one food, which would block the space for that turn, like all of the other action spaces.
Horses are pretty powerful, so I wouldn't just stick it out there as an action to receive one free horse.
Brian