Cave troll livers are needed for three oils in the game, but they are exceedingly rare and post-1.10 farming them is very difficult.  This mod replaces them for superior ogroid oil (cyclops eye) and enhanced relict oil (fiend eye).  This might be the most minor mod on this site honestly, but it solves a very real problem with the game at the moment.  Finding that one cave troll liver is tough but not too tough.  Finding three of them?  That's just ridiculous.

Not compatible with any mod that alters the def_item_alchemy_recipes_oils.xml file.