elfon
So far he has tested his powers on bacteria, plants and animals and it has only failed to work on plants (excluding the information gathering part), does his ability work on fungi? It must right if he is able to treat fungal infections, and so he could start looking into mycorrhizae to try and have a indirect effect on plants and a very large area covered and bread mold to look for penicillin for the baker girl.
Maybe you should think about changing the setting lil bit. Make ppl lil bit smarter, it could give you a better challenge and you can find more interesting things to write because so far everyone you write feels like a chinese young master (coming one after another and fall after the first blow) thx for the work anyway