Devilstrand is easily researched, and while it does take a while to grow, it also gives a decent amount of the product, while luciherb takes longer to grow and only gives 1 product per plant, meaning it takes more effort to craft luciferium, as luciferium is not something that should be easily craftable.

So modify the recipe to require more than one devilstrand.

imo it adds to the balance, devilstrand is used by a few moods and it's p good for clothes so it already gives you access to good stuff, this way you have to be actively trying to get luciferium