create "earth fire","water fire", "forest fire" costs 100 stones 1st level 1000 stones 2nd level 10000 stones 3lvl....
create reciept fish oil
0.1 litr fish_oil from one http://ringofbrodgar.com/wiki/Filet_of_Any_Fish using http://ringofbrodgar.com/wiki/Cauldron
every fire use different resurses for work 1 liter per 1h and give 1 call magic after 24h:
"earth fire" use for liting linsen oil and give 1 call magic recipe "Fishers Request for a Catch "
"water fire" use for liting fish oil and give 1 call magic recipe "Mine Song "
"forest fire" use for liting tar(or 30coal per 1 liter tar) and give 1 call magic recipe "Commune With Nature" (but magic must work without any limits)
call magic recipe must die with time like http://ringofbrodgar.com/wiki/Brimstone
time for magic bonus depends from (q fuel) * (level fire) *base_magic_time
i think its will be good idea for giving lowq resourses price over all world life